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A stabilized complementarity formulation for nonlinear analysis of 3D bimodular materials 被引量:4
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作者 l.zhang H.W.Zhang +1 位作者 J.Wu B.Yan 《Acta Mechanica Sinica》 SCIE EI CAS CSCD 2016年第3期481-490,共10页
Bi-modulus materials with different mechanical responses in tension and compression are often found in civil,composite, and biological engineering. Numerical analysis of bimodular materials is strongly nonlinear and c... Bi-modulus materials with different mechanical responses in tension and compression are often found in civil,composite, and biological engineering. Numerical analysis of bimodular materials is strongly nonlinear and convergence is usually a problem for traditional iterative schemes. This paper aims to develop a stabilized computational method for nonlinear analysis of 3D bimodular materials. Based on the parametric variational principle, a unified constitutive equation of 3D bimodular materials is proposed, which allows the eight principal stress states to be indicated by three parametric variables introduced in the principal stress directions.The original problem is transformed into a standard linear complementarity problem(LCP) by the parametric virtual work principle and a quadratic programming algorithm is developed by solving the LCP with the classic Lemke's algorithm. Update of elasticity and stiffness matrices is avoided and, thus, the proposed algorithm shows an excellent convergence behavior compared with traditional iterative schemes.Numerical examples show that the proposed method is valid and can accurately analyze mechanical responses of 3D bimodular materials. Also, stability of the algorithm is greatly improved. 展开更多
关键词 Bimodular materials Non-smooth stressstrain relationship Parametric variational principle Complementarity
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木炭蚊香可减少有毒物质的释放(详细摘要)
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作者 l.zhang 郑卫青(译) +1 位作者 王莉(译) l.zhang(译) 《中华卫生杀虫药械》 CAS 2010年第4期297-302,共6页
关键词 蚊香 有毒物质 污染物排放 摘要 颗粒物 香烟
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INITIAL ATMOSPHERIC CORROSION OF ZINC IN THE PRESENCE OF NH_4Cl 被引量:1
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作者 Q.Qu C.W.Yan +3 位作者 L.Li l.zhang G.H.Liu C.N.Cao 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 2004年第2期161-165,共5页
Influence of NH_4 Cl on the initial atmospheric corrosion of zinc was investigated viaquartz crystal microbalance (QCM) in laboratory at 80%RH and 25℃. The resultsshow that NH_4 Cl can accelerate the initial corrosio... Influence of NH_4 Cl on the initial atmospheric corrosion of zinc was investigated viaquartz crystal microbalance (QCM) in laboratory at 80%RH and 25℃. The resultsshow that NH_4 Cl can accelerate the initial corrosion of zinc. Mass gain increase withthe exposure time, but mass gain in the later doesn't change obviously due to theformation of the insoluble simonkolleite on zinc surface in the presence of NH_4 Cl.Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) wasused to characterize the corrosion products. Zn_5Cl_2(OH)_8·H_2O,(NH_4)_2ZnCl_4 andZnO are the corrosion products on zinc. Brief discussion on the mechanisms of at-mospheric corrosion of zinc in the presence of NH_4 Cl was introduced. 展开更多
关键词 atmospheric corrosion ZINC NH_4Cl
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Nonviral gene transfer with Mposome and protein
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作者 J.H.Zhu l.zhang R.Reszka 《中国实验血液学杂志》 CAS CSCD 1997年第3期336-336,共1页
The development of improved gene transfermethods is a prerequisite for gene therapy to realizeits full potentials. One approach is the design ofplasmid-based delivery system that also termed "self-assembling comp... The development of improved gene transfermethods is a prerequisite for gene therapy to realizeits full potentials. One approach is the design ofplasmid-based delivery system that also termed "self-assembling complexes" such as cationic liposome-DNAcomplex (lipoplex) and protein-DNA complex.Unlike viral vectors, liposome-DNA complexes arenoninfectious, nonimmunogenic and exhibit low 展开更多
关键词 PREREQUISITE LIPOSOME assembling complexes CATIONIC DNA TRANSFECTION LUCIFERASE augmentation OVERCOME
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TRANSMISSION ELECTRON MICROSCOPY INVESTIGATIONS OF LOW-PRESSURE CVD GROWTH AND STRAIN RELAXATION OF Ge ISLANDS ON Si(110)
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作者 E.Spiecker l.zhang +2 位作者 H.M.Lu W.Jaeger L.Vescan 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 2005年第3期427-432,共6页
Shapes, dimensions, arrangements and the microstructure of self-assembled island s fabricated by low-pressure chemical vapour deposition (LPCVD) of Ge at 700℃ o nto Si(110) substrates have been investigated for diffe... Shapes, dimensions, arrangements and the microstructure of self-assembled island s fabricated by low-pressure chemical vapour deposition (LPCVD) of Ge at 700℃ o nto Si(110) substrates have been investigated for different nominal Ge coverage by transmission electron microscopy (TEM) of plan-view and cross-section specime ns and have been compared with photoluminescence (PL) measurements of Si-capped layer samples. The transition from the 2-dimensional layer to the 3-dimensional island growth mode takes place for a Ge deposition of nominally less than 2 mono layers. Upon this transition, many coherent islands and few larger islands with extended defects are observed. The coherent islands possess a dome-like shape an d lateral sizes up to 130nm. Photoluminescence spectra show island-related peaks whose energy positions are shifted towards lower energy with higher Ge coverage . 展开更多
关键词 Si-Ge heteroepitaxy surface transmission electron microscopy NANOSTRUCTURE
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Spectral and Timing Analysis of the Black Hole Transient MAXI J1631–479 During its 2019 Outburst Observed with Insight-HXMT
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作者 Yu-Cong Fu L.M.Song +14 位作者 G.Q.Ding S.N.Zhang J.L.Qu S.Zhang l.zhang Q.C.Bu Y.Huang X.Ma Z.X.Yang Y.L.Tuo X.F.Lu D.K.Zhou B.Y.Wu T.M.Li Y.C.Xu 《Research in Astronomy and Astrophysics》 SCIE CAS CSCD 2022年第11期21-33,共13页
We report spectral and timing analysis of the black hole transient MAXI J1631–479 during the hard intermediate state of its 2019 outburst from the Insight-Hard X-ray Modulation Telescope(Insight-HXMT)observations.We ... We report spectral and timing analysis of the black hole transient MAXI J1631–479 during the hard intermediate state of its 2019 outburst from the Insight-Hard X-ray Modulation Telescope(Insight-HXMT)observations.We find that the energy dependence of the type-C quasi-periodic oscillation(QPO)frequency evolves with time:during the initial rise of a small flare(~MJD 58526.0-58527.1),the QPO frequency increases with increasing energy from~1 to~100 ke V,and then the frequency remains constant after MJD 58527.1.We discover a possible new phenomenon of Fe line’s QPO frequency jump that has never been observed for other black hole transients:during the small flare,the QPO frequency around the Fe line energy is higher than any other energy band,with the frequency difference Δf=0.25±0.08 Hz between 5.5–7.5 ke V and other energy bands.The spectral analysis shows that the evolution of QPOs is related to the equivalent width of the narrow Fe line,and its equivalent width increases during this small flare.We propose that the QPO frequency difference results from the differential precession of a vertically extended jet,and the higher QPO frequency of Fe line could be caused by the layered jet when the jet scale increases.At the same time,the evolution of QPOs is related to the accretion rate,while the energy dependence of QPOs supports the existence of deceleration in the vertically distributed jet. 展开更多
关键词 ACCRETION accretion disks stars:black holes X-rays:binaries
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Search for Steady Emission of 10—TeV Gamma Rays from the Crab Nebula,Cygnus X—3,and Hercules X—1 Using the Tibet Air Shower Array
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作者 M.Amenomori Z.Cao.L.K.Ding +49 位作者 Z.Y.Feng K.Hibino N.Hotta Q.Huang A.X.Huo H.Y.Jia G.Z.Jiang S.Q.Jiao F.Kajino K.Kasahara Labaciren D.M.Mei L.Meng X.R.Meng Mimaeiren K.Mizutani J.Mu H.Nanjo M.Nishizawa Nusang A.Oguro M.Ohnishi I.Ohta J.R.Ren To.saito M.Sakata Z.Z.Shi M.Shibata T.shirai H.sugimoto X.X.Sun A.Tai K.Taira Y.H.Tan N.Tateyama S.Torii H.Wang C.Z.Wen Y.Yamamoto X.Y.Yao G.C.Yu P.Yuan T.Yuda J.G.Zeng C.S.Zhang H.M.Zhang l.zhang Zhasang Zhaxlclren W.D.Zhou 《西藏大学学报(社会科学版)》 1993年第4期71-75,共5页
寻找到高能和超高能的Gamma射线点源,在宇宙射线源方面有着极为重要的意义,本文就西藏羊八井观测到的空气簇射阵列及共它资料,对寻找稳定的10-TeV Gamma射线进行了分析论述。
关键词 西藏空气簇射 Gamma射线点源 大气厚度 10TeV
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Cosmic—Ray Deficit from the Directions of the moon and the Sun Detected with the Tibet Air Shower Array 被引量:1
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作者 M.Amenomori Z.Cao +49 位作者 L.K.Ding Z.Y.Feng Hibino N.Hotta Q.Huang A.X.Huo H.Y.Jia G.z.Jiang S.Q.Jiao F.Kajino K.Kasahara Labaciren D.M.Mei L.Meng X.R.Meng Mimaciren K.Mizutani J.Mu H.Nanjo M.Nishizawa Nusang A.Oguro M.Ohnishi I.Ohta To.Saito M.Sakata Z.Z.shi M.Shibata T.Shirai H.Sugimoto X.X.Sun A.Tai K.Taira Y.H.Tan N.Tateyama S.Torii H.Wang C.Z.Wen Y.Yamamoto X.Y.Yao G.C.Yu P.Yuan T.Yuda J.G.Zeng C.S.Zhang H.M.Zhang l.zhang Zhasang Zhaxiciren W.D.Zhou 《西藏大学学报(社会科学版)》 1993年第4期76-85,共10页
Data from the Tibet air shower array were used to examine the cosmic ray shadows of the Moon and the Sun at energies around 10Tev.The shadowing effect was clearly observed at the 5.8level for the Moon,while the shadow... Data from the Tibet air shower array were used to examine the cosmic ray shadows of the Moon and the Sun at energies around 10Tev.The shadowing effect was clearly observed at the 5.8level for the Moon,while the shadow of the Sun was found in the direction away from the sun by 0.86°tothe west and 0.43°to the south.The effect of the geomagnetic field has also been observed in the shadow of cosmic rays by the Moon.The observed deflection of the sun’s shadow is briefly discussed in connection with the effect of the magnetic fields between the sun and the Earth.This is the first observation of the effects of such magnetic fields on the cosmic ray shadow.The maximum-likelihood analysis of the Moon data set shows that the angular resolutions of the array for showers with its mode energies 7TeVand 35TeV are 0.87°-0.13°+0.10°and 0.54°-0.08°+0.11°,respectively. 展开更多
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Model predictive control for water management and energy security in arid/semiarid regions
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作者 D.M.Bajany l.zhang X.Xia 《Journal of Automation and Intelligence》 2022年第1期55-67,共13页
This paper aims to develop a realistic operational optimal management of a water supply system in an arid/semiarid region under climate change conditions.The developed model considers the dynamic variation of water de... This paper aims to develop a realistic operational optimal management of a water supply system in an arid/semiarid region under climate change conditions.The developed model considers the dynamic variation of water demand,rainfall,weather,and seasonal change in electricity price.It is mathematically developed as a multi-constraint non-linear programming model based on model predictive control principles.The model optimises the quantities of water supplied by each source every month and improves the energy efficiency in a water supply system with multiple types of sources.The effectiveness of the developed MPC model is verified by applying it to a case study and comparing the results with those obtained with an open loop model.Results showed that using the MPC model leads to a 4.16%increase in the water supply cost compared to the open loop model.However,when considering uncertainties in predicting water demands,aquifer recharges,rainfall,and evaporation rate,the MPC model was better than the open loop model.Indeed,the MPC model could meet the water demand at any period due to its predictability of variations,which was not the case with the open loop model.Moreover,a sensitivity analysis is conducted to verify the capacity of the developed model to deal with some phenomena due to climatic changes,such as in rainfall. 展开更多
关键词 Water supply management Model predictive control Energy-water nexus
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STCF conceptual design report (Volume 1): Physics & detector 被引量:3
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作者 M.Achasov X.C.Ai +457 位作者 L.P.An R.Aliberti Q.An X.Z.Bai Y.Bai O.Bakina A.Barnyakov V.Blinov V.Bobrovnikov D.Bodrov A.Bogomyagkov A.Bondar I.Boyko Z.H.Bu F.M.Cai H.Cai J.J.Cao Q.H.Cao X.Cao Z.Cao Q.Chang K.T.Chao D.Y.Chen H.Chen H.X.Chen J.F.Chen K.Chen L.L.Chen P.Chen S.L.Chen S.M.Chen S.Chen S.P.Chen W.Chen X.Chen X.F.Chen X.R.Chen Y.Chen Y.Q.Chen H.Y.Cheng J.Cheng S.Cheng T.G.Cheng J.P.Dai L.Y.Dai X.C.Dai D.Dedovich A.Denig I.Denisenko J.M.Dias D.Z.Ding L.Y.Dong W.H.Dong V.Druzhinin D.S.Du Y.J.Du Z.G.Du L.M.Duan D.Epifanov Y.L.Fan S.S.Fang Z.J.Fang G.Fedotovich C.Q.Feng X.Feng Y.T.Feng J.L.Fu J.Gao Y.N.Gao P.S.Ge C.Q.Geng L.S.Geng A.Gilman L.Gong T.Gong B.Gou W.Gradl J.L.Gu A.Guevara L.C.Gui A.Q.Guo F.K.Guo J.C.Guo J.Guo Y.P.Guo Z.H.Guo A.Guskov K.L.Han L.Han M.Han X.Q.Hao J.B.He S.Q.He X.G.He Y.L.He Z.B.He Z.X.Heng B.L.Hou T.J.Hou Y.R.Hou C.Y.Hu H.M.Hu K.Hu R.J.Hu W.H.Hu X.H.Hu Y.C.Hu J.Hua G.S.Huang J.S.Huang M.Huang Q.Y.Huang W.Q.Huang X.T.Huang X.J.Huang Y.B.Huang Y.S.Huang N.Hüsken V.Ivanov Q.P.Ji J.J.Jia S.Jia Z.K.Jia H.B.Jiang J.Jiang S.Z.Jiang J.B.Jiao Z.Jiao H.J.Jing X.L.Kang X.S.Kang B.C.Ke M.Kenzie A.Khoukaz I.Koop E.Kravchenko A.Kuzmin Y.Lei E.Levichev C.H.Li C.Li D.Y.Li F.Li G.Li G.Li H.B.Li H.Li H.N.Li H.J.Li H.L.Li J.M.Li J.Li L.Li L.Li L.Y.Li N.Li P.R.Li R.H.Li S.Li T.Li W.J.Li X.Li X.H.Li X.Q.Li X.H.Li Y.Li Y.Y.Li Z.J.Li H.Liang J.H.Liang Y.T.Liang G.R.Liao L.Z.Liao Y.Liao C.X.Lin D.X.Lin X.S.Lin B.J.Liu C.W.Liu D.Liu F.Liu G.M.Liu H.B.Liu J.Liu J.J.Liu J.B.Liu K.Liu K.Y.Liu K.Liu L.Liu Q.Liu S.B.Liu T.Liu X.Liu Y.W.Liu Y.Liu Y.L.Liu Z.Q.Liu Z.Y.Liu Z.W.Liu I.Logashenko Y.Long C.G.Lu J.X.Lu N.Lu Q.F.Lü Y.Lu Y.Lu Z.Lu P.Lukin F.J.Luo T.Luo X.F.Luo Y.H.Luo H.J.Lyu X.R.Lyu J.P.Ma P.Ma Y.Ma Y.M.Ma F.Maas S.Malde D.Matvienko Z.X.Meng R.Mitchell A.Nefediev Y.Nefedov S.L.Olsen Q.Ouyang P.Pakhlov G.Pakhlova X.Pan Y.Pan E.Passemar Y.P.Pei H.P.Peng L.Peng X.Y.Peng X.J.Peng K.Peters S.Pivovarov E.Pyata B.B.Qi Y.Q.Qi W.B.Qian Y.Qian C.F.Qiao J.J.Qin J.J.Qin L.Q.Qin X.S.Qin T.L.Qiu J.Rademacker C.F.Redmer H.Y.Sang M.Saur W.Shan X.Y.Shan L.L.Shang M.Shao L.Shekhtman C.P.Shen J.M.Shen Z.T.Shen H.C.Shi X.D.Shi B.Shwartz A.Sokolov J.J.Song W.M.Song Y.Song Y.X.Song A.Sukharev J.F.Sun L.Sun X.M.Sun Y.J.Sun Z.P.Sun J.Tang S.S.Tang Z.B.Tang C.H.Tian J.S.Tian Y.Tian Y.Tikhonov K.Todyshev T.Uglov V.Vorobyev B.D.Wan B.L.Wang B.Wang D.Y.Wang G.Y.Wang G.L.Wang H.L.Wang J.Wang J.H.Wang J.C.Wang M.L.Wang R.Wang R.Wang S.B.Wang W.Wang W.P.Wang X.C.Wang X.D.Wang X.L.Wang X.L.Wang X.P.Wang X.F.Wang Y.D.Wang Y.P.Wang Y.Q.Wang Y.L.Wang Y.G.Wang Z.Y.Wang Z.Y.Wang Z.L.Wang Z.G.Wang D.H.Wei X.L.Wei X.M.Wei Q.G.Wen X.J.Wen G.Wilkinson B.Wu J.J.Wu L.Wu P.Wu T.W.Wu Y.S.Wu L.Xia T.Xiang C.W.Xiao D.Xiao M.Xiao K.P.Xie Y.H.Xie Y.Xing Z.Z.Xing X.N.Xiong F.R.Xu J.Xu L.L.Xu Q.N.Xu X.C.Xu X.P.Xu Y.C.Xu Y.P.Xu Y.Xu Z.Z.Xu D.W.Xuan F.F.Xue L.Yan M.J.Yan W.B.Yan W.C.Yan X.S.Yan B.F.Yang C.Yang H.J.Yang H.R.Yang H.T.Yang J.F.Yang S.L.Yang Y.D.Yang Y.H.Yang Y.S.Yang Y.L.Yang Z.W.Yang Z.Y.Yang D.L.Yao H.Yin X.H.Yin N.Yokozaki S.Y.You Z.Y.You C.X.Yu F.S.Yu G.L.Yu H.L.Yu J.S.Yu J.Q.Yu L.Yuan X.B.Yuan Z.Y.Yuan Y.F.Yue M.Zeng S.Zeng A.l.zhang B.W.Zhang G.Y.Zhang G.Q.Zhang H.J.Zhang H.B.Zhang J.Y.Zhang J.l.zhang J.Zhang l.zhang L.M.Zhang Q.A.Zhang R.Zhang S.l.zhang T.Zhang X.Zhang Y.Zhang Y.J.Zhang Y.X.Zhang Y.T.Zhang Y.F.Zhang Y.C.Zhang Y.Zhang Y.Zhang Y.M.Zhang Y.l.zhang Z.H.Zhang Z.Y.Zhang Z.Y.Zhang H.Y.Zhao J.Zhao L.Zhao M.G.Zhao Q.Zhao R.G.Zhao R.P.Zhao Y.X.Zhao Z.G.Zhao Z.X.Zhao A.Zhemchugov B.Zheng L.Zheng Q.B.Zheng R.Zheng Y.H.Zheng X.H.Zhong H.J.Zhou H.Q.Zhou H.Zhou S.H.Zhou X.Zhou X.K.Zhou X.P.Zhou X.R.Zhou Y.L.Zhou Y.Zhou Y.X.Zhou Z.Y.Zhou J.Y.Zhu K.Zhu R.D.Zhu R.L.Zhu S.H.Zhu Y.C.Zhu Z.A.Zhu V.Zhukova V.Zhulanov B.S.Zou Y.B.Zuo 《Frontiers of physics》 SCIE CSCD 2024年第1期1-154,共154页
The superτ-charm facility(STCF)is an electron–positron collider proposed by the Chinese particle physics community.It is designed to operate in a center-of-mass energy range from 2 to 7 GeV with a peak luminosity of... The superτ-charm facility(STCF)is an electron–positron collider proposed by the Chinese particle physics community.It is designed to operate in a center-of-mass energy range from 2 to 7 GeV with a peak luminosity of 0.5×10^(35) cm^(–2)·s^(–1) or higher.The STCF will produce a data sample about a factor of 100 larger than that of the presentτ-charm factory—the BEPCII,providing a unique platform for exploring the asymmetry of matter-antimatter(charge-parity violation),in-depth studies of the internal structure of hadrons and the nature of non-perturbative strong interactions,as well as searching for exotic hadrons and physics beyond the Standard Model.The STCF project in China is under development with an extensive R&D program.This document presents the physics opportunities at the STCF,describes conceptual designs of the STCF detector system,and discusses future plans for detector R&D and physics case studies. 展开更多
关键词 electron–positron collider tau-charm region high luminosity STCF detector conceptual design
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Search for the doubly heavy baryon Ξ_(bc)^(+)→ decaying to J/ψΞ_(c)^(+) 被引量:1
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作者 R.Aaij A.S.W.Abdelmotteleb +1013 位作者 C.Abellan Beteta F.Abudinén T.Ackernley B.Adeva M.Adinolfi H.Afsharnia C.Agapopoulou C.A.Aidala S.Aiola Z.Ajaltouni S.Akar K.Akiba J.Albrecht F.Alessio M.Alexander A.Alfonso Albero Z.Aliouche P.Alvarez Cartelle S.Amato J.L.Amey Y.Amhis L.An L.Anderlini M.Andersson A.Andreianov M.Andreotti D.Andreou D.Ao F.Archilli A.Artamonov M.Artuso E.Aslanides M.Atzeni B.Audurier S.Bachmann M.Bachmayer J.J.Back A.Bailly-reyre P.Baladron Rodriguez V.Balagura W.Baldini J.Baptista de Souza Leite M.Barbetti R.J.Barlow S.Barsuk W.Barter M.Bartolini F.Baryshnikov J.M.Basels G.Bassi B.Batsukh A.Battig A.Bay A.Beck M.Becker F.Bedeschi I.B.Bediaga A.Beiter V.Belavin S.Belin V.Bellee K.Belous I.Belov I.Belyaev G.Bencivenni E.Ben-Haim A.Berezhnoy R.Bernet D.Berninghoff H.C.Bernstein C.Bertella A.Bertolin C.Betancourt F.Betti Ia.Bezshyiko S.Bhasin J.Bhom L.Bian M.S.Bieker N.V.Biesuz S.Bifani P.Billoir A.Biolchini M.Birch F.C.R.Bishop A.Bitadze A.Bizzeti M.P.Blago T.Blake F.Blanc S.Blusk D.Bobulska J.A.Boelhauve O.Boente Garcia T.Boettcher A.Boldyrev N.Bondar S.Borghi M.Borsato J.T.Borsuk S.A.Bouchiba T.J.V.Bowcock A.Boyer C.Bozzi M.J.Bradley S.Braun A.Brea Rodriguez J.Brodzicka A.Brossa Gonzalo D.Brundu A.Buonaura L.Buonincontri A.T.Burke C.Burr A.Bursche A.Butkevich J.S.Butter J.Buytaert W.Byczynski S.Cadeddu H.Cai R.Calabrese L.Calefice S.Cali R.Calladine M.Calvi M.Calvo Gomez P.Camargo Magalhaes P.Campana D.H.Campora Perez A.F.Campoverde Quezada S.Capelli L.Capriotti A.Carbone G.Carboni R.Cardinale A.Cardini I.Carli P.Carniti L.Carus A.Casais Vidal R.Caspary G.Casse M.Cattaneo G.Cavallero V.Cavallini S.Celani J.Cerasoli D.Cervenkov A.J.Chadwick M.G.Chapman M.Charles Ph.Charpentier C.A.Chavez Barajas M.Chefdeville C.Chen S.Chen A.Chernov S.Chernyshenko V.Chobanova S.Cholak M.Chrzaszcz A.Chubykin V.Chulikov P.Ciambrone M.F.Cicala X.Cid Vidal G.Ciezarek G.Ciullo P.E.L.Clarke M.Clemencic H.V.Cliff J.Closier J.L.Cobbledick V.Coco J.A.B.Coelho J.Cogan E.Cogneras L.Cojocariu P.Collins T.Colombo L.Congedo A.Contu N.Cooke G.Coombs I.Corredoira G.Corti B.Couturier D.C.Craik J.Crkovská M.Cruz Torres R.Currie C.L.Da Silva S.Dadabaev L.Dai E.Dall'Occo J.Dalseno C.D'Ambrosio A.Danilina P.d'Argent J.E.Davies A.Davis O.De Aguiar Francisco J.de Boer K.De Bruyn S.De Capua M.De Cian U.De Freitas Carneiro Da Graca E.De Lucia J.M.De Miranda L.De Paula M.De Serio D.De Simone P.De Simone F.De Vellis J.A.de Vries C.T.Dean F.Debernardis D.Decamp V.Dedu L.Del Buono B.Delaney H.-P.Dembinski V.Denysenko O.Deschamps F.Dettori B.Dey A.Di Cicco P.Di Nezza S.Didenko L.Dieste Maronas S.Ding V.Dobishuk A.Dolmatov C.Dong A.M.Donohoe F.Dordei A.C.dos Reis L.Douglas A.G.Downes M.W.Dudek L.Dufour V.Duk P.Durante J.M.Durham D.Dutta A.Dziurda A.Dzyuba S.Easo U.Egede V.Egorychev S.Eidelman S.Eisenhardt S.Ek-In L.Eklund S.Ely A.Ene E.Epple S.Escher J.Eschle S.Esen T.Evans L.N.Falcao Y.Fan B.Fang S.Farry D.Fazzini M.Feo A.D.Fernez F.Ferrari L.Ferreira Lopes F.Ferreira 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M.Vesterinen D.Vieira M.Vieites Diaz X.Vilasis-Cardona E.Vilella Figueras A.Villa P.Vincent F.C.Volle D.vom Bruch A.Vorobyev V.Vorobyev N.Voropaev K.Vos R.Waldi J.Walsh C.Wang J.Wang J.Wang J.Wang J.Wang M.Wang R.Wang Y.Wang Z.Wang Z.Wang Z.Wang J.A.Ward N.K.Watson D.Websdale C.Weisser B.D.C.Westhenry D.J.White M.Whitehead A.R.Wiederhold D.Wiedner G.Wilkinson M.K.Wilkinson I.Williams M.Williams M.R.J.Williams R.Williams F.F.Wilson W.Wislicki M.Witek L.Witola C.P.Wong G.Wormser S.A.Wotton H.Wu K.Wyllie Z.Xiang D.Xiao Y.Xie A.Xu J.Xu L.Xu M.Xu Q.Xu Z.Xu Z.Xu D.Yang S.Yang Y.Yang Z.Yang Z.Yang L.E.Yeomans H.Yin J.Yu X.Yuan E.Zaffaroni M.Zavertyaev M.Zdybal O.Zenaiev M.Zeng D.Zhang l.zhang S.Zhang S.Zhang Y.Zhang Y.Zhang A.Zharkova A.Zhelezov Y.Zheng T.Zhou X.Zhou Y.Zhou V.Zhovkovska X.Zhu X.Zhu Z.Zhu V.Zhukov Q.Zou S.Zucchelli D.Zuliani G.Zunica LHCb Collaboration 《Chinese Physics C》 SCIE CAS CSCD 2023年第9期1-13,共13页
A first search for the Ξ_(bc)^(+)J/ψΞ_(c)^(+) decay is performed by the LHCb experiment with a data sample of proton-proton collisions, corresponding to an integrated luminosity of 9 fb−1 recorded at centre-of-mass... A first search for the Ξ_(bc)^(+)J/ψΞ_(c)^(+) decay is performed by the LHCb experiment with a data sample of proton-proton collisions, corresponding to an integrated luminosity of 9 fb−1 recorded at centre-of-mass energies of 7, 8, and 13 TeV. Two peaking structures are seen with a local (global) significance of 4.3(2.8) and 4.1(2.4) standard deviations at masses of 6571 and 6694 MeV/c2, respectively. Upper limits are set on the Ξ+bc baryon production cross-section times the branching fraction relative to that of the B+c→J/ψD+s decay at centre-of-mass energies of 8 and 13 TeV, in the Ξ+bc and in the B+c rapidity and transverse-momentum ranges from 2.0 to 4.5 and 0 to 20GeV/c, respectively. Upper limits are presented as a function of the Ξ+bc mass and lifetime. 展开更多
关键词 QCD B physics charm physics spectroscopy
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Search for the rare decays W^(+)→D_(s)^(+)γ and Z→D^(0)γ at LHCb 被引量:1
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作者 R.Aaij A.S.W.Abdelmotteleb +1069 位作者 C.Abellan Beteta F.Abudinén T.Ackernley B.Adeva M.Adinolfi P.Adlarson H.Afsharnia C.Agapopoulou C.A.Aidala Z.Ajaltouni S.Akar K.Akiba J.Albrecht F.Alessio M.Alexander A.Alfonso Albero Z.Aliouche P.Alvarez Cartelle R.Amalric S.Amato J.L.Amey Y.Amhis L.An L.Anderlini M.Andersson A.Andreianov M.Andreotti D.Andreou D.Ao F.Archilli A.Artamonov M.Artuso E.Aslanides M.Atzeni B.Audurier S.Bachmann M.Bachmayer J.J.Back A.Bailly-reyre P.Baladron Rodriguez V.Balagura W.Baldini J.Baptista de Souza Leite M.Barbetti R.J.Barlow S.Barsuk W.Barter M.Bartolini F.Baryshnikov J.M.Basels G.Bassi B.Batsukh A.Battig A.Bay A.Beck M.Becker F.Bedeschi I.B.Bediaga A.Beiter V.Belavin S.Belin V.Bellee K.Belous I.Belov I.Belyaev G.Benane G.Bencivenni E.Ben-Haim A.Berezhnoy R.Bernet S.Bernet Andres D.Berninghoff H.C.Bernstein C.Bertella A.Bertolin C.Betancourt F.Betti Ia.Bezshyiko S.Bhasin J.Bhom L.Bian M.S.Bieker N.V.Biesuz S.Bifani P.Billoir A.Biolchini M.Birch F.C.R.Bishop 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F.Fabiano L.N.Falcao Y.Fan B.Fang L.Fantini M.Faria S.Farry D.Fazzini L.F Felkowski M.Feo M.Fernandez Gomez A.D.Fernez F.Ferrari L.Ferreira Lopes F.Ferreira Rodrigues S.Ferreres Sole M.Ferrillo M.Ferro-Luzzi S.Filippov R.A.Fini M.Fiorini M.Firlej K.M.Fischer D.S.Fitzgerald C.Fitzpatrick T.Fiutowski F.Fleuret M.Fontana F.Fontanelli R.Forty D.Foulds-Holt V.Franco Lima M.Franco Sevilla M.Frank E.Franzoso G.Frau C.Frei D.A.Friday J.Fu Q.Fuehring T.Fulghesu E.Gabriel G.Galati M.D.Galati A.Gallas Torreira D.Galli S.Gambetta Y.Gan M.Gandelman P.Gandini Y.Gao Y.Gao M.Garau L.M.Garcia Martin P.Garcia Moreno J.García Pardiaas B.Garcia Plana F.A.Garcia Rosales L.Garrido C.Gaspar R.E.Geertsema D.Gerick L.L.Gerken E.Gersabeck M.Gersabeck T.Gershon L.Giambastiani V.Gibson H.K.Giemza A.L.Gilman M.Giovannetti A.Gioventù P.Gironella Gironell C.Giugliano M.A.Giza K.Gizdov E.L.Gkougkousis V.V.Gligorov C.Gabel E.Golobardes D.Golubkov A.Golutvin A.Gomes S.Gomez Fernandez F.Goncalves Abrantes M.Goncerz G.Gong I.V.Gorelov C.Gotti J.P.Grabowski T.Grammatico L.A.Granado Cardoso E.Graugés E.Graverini G.Graziani A.T.Grecu L.M.Greeven N.A.Grieser L.Grillo S.Gromov B.R.Gruberg Cazon C.Gu M.Guarise M.Guittiere P.A.Günther E.Gushchin A.Guth Y.Guz T.Gys T.Hadavizadeh C.Hadjivasiliou G.Haefeli C.Haen J.Haimberger S.C.Haines T.Halewood-leagas M.M.Halvorsen P.M.Hamilton J.Hammerich Q.Han X.Han E.B.Hansen S.Hansmann-Menzemer L.Hao N.Harnew T.Harrison C.Hasse M.Hatch J.He K.Heijhoff C.Henderson R.D.L.Henderson A.M.Hennequin K.Hennessy L.Henry J.Herd J.Heuel A.Hicheur D.Hill M.Hilton S.E.Hollitt J.Horswill R.Hou Y.Hou J.Hu J.Hu W.Hu X.Hu W.Huang X.Huang W.Hulsbergen R.J.Hunter M.Hushchyn D.Hutchcroft P.Ibis M.Idzik D.Ilin P.Ilten A.Inglessi A.Iniukhin A.Ishteev K.Ivshin R.Jacobsson H.Jage S.J.Jaimes Elles S.Jakobsen E.Jans B.K.Jashal A.Jawahery V.Jevtic E.Jiang X.Jiang Y.Jiang M.John D.Johnson C.R.Jones T.P.Jones B.Jost N.Jurik I.Juszczak S.Kandybei Y.Kang M.Karacson D.Karpenkov M.Karpov J.W.Kautz F.Keizer D.M.Keller M.Kenzie T.Ketel B.Khanji A.Kharisova S.Kholodenko G.Khreich T.Kirn V.S.Kirsebom O.Kitouni S.Klaver N.Kleijne K.Klimaszewski M.R.Kmiec S.Koliiev A.Kondybayeva A.Konoplyannikov P.Kopciewicz R.Kopecna P.Koppenburg M.Korolev I.Kostiuk O.Kot S.Kotriakhova A.Kozachuk P.Kravchenko L.Kravchuk R.D.Krawczyk M.Kreps S.Kretzschmar P.Krokovny W.Krupa W.Krzemien J.Kubat S.Kubis W.Kucewicz M.Kucharczyk V.Kudryavtsev A.Kupsc D.Lacarrere G.Lafferty A.Lai A.Lampis D.Lancierini C.Landesa Gomez J.J.Lane R.Lane G.Lanfranchi C.Langenbruch J.Langer O.Lantwin T.Latham F.Lazzari M.Lazzaroni R.Le Gac S.H.Lee R.Lefèvre A.Leflat S.Legotin P.Lenisa O.Leroy T.Lesiak B.Leverington A.Li H.Li K.Li P.Li P.-R.Li S.Li T.Li T.Li Y.Li Z.Li X.Liang C.Lin T.Lin R.Lindner V.Lisovskyi R.Litvinov G.Liu H.Liu Q.Liu S.Liu A.Lobo Salvia A.Loi R.Lollini J.Lomba Castro I.Longstaff J.H.Lopes A.Lopez Huertas S.López Soliao G.H.Lovell Y.Lu C.Lucarelli D.Lucchesi S.Luchuk M.Lucio Martinez V.Lukashenko Y.Luo A.Lupato E.Luppi A.Lusiani K.Lynch X.-R.Lyu L.Ma R.Ma S.Maccolini F.Machefert F.Maciuc I.Mackay V.Macko P.Mackowiak L.R.Madhan Mohan A.Maevskiy D.Maisuzenko M.W.Majewski J.J.Malczewski S.Malde B.Malecki A.Malinin T.Maltsev G.Manca G.Mancinelli C.Mancuso D.Manuzzi C.A.Manzari D.Marangotto J.F.Marchand U.Marconi S.Mariani C.Marin Benito J.Marks A.M.Marshall P.J.Marshall G.Martelli G.Martellotti L.Martinazzoli M.Martinelli D.Martinez Santos F.Martinez Vidal A.Massafferri M.Materok R.Matev A.Mathad V.Matiunin C.Matteuzzi K.R.Mattioli A.Mauri E.Maurice J.Mauricio M.Mazurek M.McCann L.Mcconnell T.H.McGrath N.T.McHugh A.McNab R.McNulty J.V.Mead B.Meadows G.Meier D.Melnychuk S.Meloni M.Merk A.Merli L.Meyer Garcia D.Miao M.Mikhasenko D.A.Milanes E.Millard M.Milovanovic M.-N.Minard A.Minotti T.Miralles S.E.Mitchell B.Mitreska D.S.Mitzel A.Madden R.A.Mohammed R.D.Moise S.Mokhnenko T.Mombacher M.Monk I.A.Monroy S.Monteil M.Morandin G.Morello M.J.Morello J.Moron A.B.Morris A.G.Morris R.Mountain H.Mu E.Muhammad F.Muheim M.Mulder K.Müller C.H.Murphy D.Murray R.Murta P.Muzzetto P.Naik T.Nakada R.Nandakumar T.Nanut I.Nasteva M.Needham N.Neri S.Neubert N.Neufeld P.Neustroev R.Newcombe J.Nicolini E.M.Niel S.Nieswand N.Nikitin N.S.Nolte C.Normand J.Novoa Fernandez C.Nunez A.Oblakowska-Mucha V.Obraztsov T.Oeser D.P.O'Hanlon S.Okamura R.Oldeman F.Oliva C.J.G.Onderwater R.H.O'Neil J.M.Otalora Goicochea T.Ovsiannikova P.Owen A.Oyanguren O.Ozcelik K.O.Padeken B.Pagare P.R.Pais T.Pajero A.Palano M.Palutan Y.Pan G.Panshin L.Paolucci A.Papanestis M.Pappagallo L.L.Pappalardo C.Pappenheimer W.Parker C.Parkes B.Passalacqua G.Passaleva A.Pastore M.Patel C.Patrignani C.J.Pawley A.Pearce A.Pellegrino M.Pepe Altarelli S.Perazzini D.Pereima A.Pereiro Castro P.Perret M.Petric K.Petridis A.Petrolini A.Petrov S.Petrucci M.Petruzzo H.Pham A.Philippov R.Piandani L.Pica M.Piccini B.Pietrzyk G.Pietrzyk M.Pili D.Pinci F.Pisani M.Pizzichemi V.Placinta J.Plews M.Plo Casasus F.Polci M.Poli Lener M.Poliakova A.Poluektov N.Polukhina I.Polyakov E.Polycarpo S.Ponce D.Popov S.Popov S.Poslavskii K.Prasanth L.Promberger C.Prouve V.Pugatch V.Puill G.Punzi H.R.Qi W.Qian N.Qin S.Qu R.Quagliani N.V.Raab R.I.Rabadan Trejo B.Rachwal J.H.Rademacker R.Rajagopalan M.Rama M.Ramos Pernas M.S.Rangel F.Ratnikov G.Raven M.Rebollo De Miguel F.Redi J.Reich F.Reiss C.Remon Alepuz Z.Ren P.K.Resmi R.Ribatti A.M.Ricci S.Ricciardi K.Richardson M.Richardson-Slipper K.Rinnert P.Robbe G.Robertson A.B.Rodrigues E.Rodrigues E.Rodriguez Fernandez J.A.Rodriguez Lopez E.Rodriguez Rodriguez D.L.Rolf A.Rollings P.Roloff V.Romanovskiy M.Romero Lamas A.Romero Vidal J.D.Roth M.Rotondo M.S.Rudolph T.Ruf R.A.Ruiz Fernandez J.Ruiz Vidal A.Ryzhikov J.Ryzka J.J.Saborido Silva N.Sagidova N.Sahoo B.Saitta M.Salomoni C.Sanchez Gras I.Sanderswood R.Santacesaria C.Santamarina Rios M.Santimaria E.Santovetti D.Saranin G.Sarpis M.Sarpis A.Sarti C.Satriano A.Satta M.Saur D.Savrina H.Sazak L.G.Scantlebury Smead A.Scarabotto S.Schael S.Scherl M.Schiller H.Schindler M.Schmelling B.Schmidt S.Schmitt O.Schneider A.Schopper M.Schubiger S.Schulte M.H.Schune R.Schwemmer B.Sciascia A.Sciuccati S.Sellam A.Semennikov M.Senghi Soares A.Sergi N.Serra L.Sestini A.Seuthe Y.Shang D.M.Shangase M.Shapkin I.Shchemerov L.Shchutska T.Shears L.Shekhtman Z.Shen S.Sheng V.Shevchenko B.Shi E.B.Shields Y.Shimizu E.Shmanin R.Shorkin J.D.Shupperd B.G.Siddi R.Silva Coutinho G.Simi S.Simone M.Singla N.Skidmore R.Skuza T.Skwarnicki M.W.Slater J.C.Smallwood J.G.Smeaton E.Smith K.Smith M.Smith A.Snoch L.Soares Lavra M.D.Sokoloff F.J.P.Soler A.Solomin A.Solovev I.Solovyev R.Song F.L.Souza De Almeida B.Souza De Paula B.Spaan E.Spadaro Norella E.Spedicato E.Spiridenkov P.Spradlin V.Sriskaran F.Stagni M.Stahl S.Stahl S.Stanislaus E.N.Stein O.Steinkamp O.Stenyakin H.Stevens S.Stone D.Strekalina Y.S Su F.Suljik J.Sun L.Sun Y.Sun P.Svihra P.N.Swallow K.Swientek A.Szabelski T.Szumlak M.Szymanski Y.Tan S.Taneja M.D.Tat A.Terentev F.Teubert E.Thomas D.J.D.Thompson K.A.Thomson H.Tilquin V.Tisserand S.T'Jampens M.Tobin L.Tomassetti G.Tonani X.Tong D.Torres Machado D.Y.Tou S.M.Trilov C.Trippl G.Tuci A.Tully N.Tuning A.Ukleja D.J.Unverzagt A.Usachov A.Ustyuzhanin U.Uwer A.Vagner V.Vagnoni A.Valassi G.Valenti N.Valls Canudas M.van Beuzekom M.Van Dijk H.Van Hecke E.van Herwijnen C.B.Van Hulse M.van Veghel R.Vazquez Gomez P.Vazquez Regueiro C.Vázquez Sierra S.Vecchi J.J.Velthuis M.Veltri A.Venkateswaran M.Veronesi M.Vesterinen D.Vieira M.Vieites Diaz X.Vilasis-Cardona E.Vilella Figueras A.Villa P.Vincent F.C.Volle D.vom Bruch A.Vorobyev V.Vorobyev N.Voropaev K.Vos C.Vrahas R.Waldi J.Walsh G.Wan C.Wang G.Wang J.Wang J.Wang J.Wang J.Wang M.Wang R.Wang X.Wang Y.Wang Z.Wang Z.Wang Z.Wang J.A.Ward N.K.Watson D.Websdale Y.Wei C.Weisser B.D.C.Westhenry D.J.White M.Whitehead A.R.Wiederhold D.Wiedner G.Wilkinson M.K.Wilkinson I.Williams M.Williams M.R.J.Williams R.Williams F.F.Wilson W.Wislicki M.Witek L.Witola C.P.Wong G.Wormser S.A.Wotton H.Wu J.Wu K.Wyllie Z.Xiang D.Xiao Y.Xie A.Xu J.Xu L.Xu L.Xu M.Xu Q.Xu Z.Xu Z.Xu D.Yang S.Yang X.Yang Y.Yang Z.Yang Z.Yang L.E.Yeomans V.Yeroshenko H.Yeung H.Yin J.Yu X.Yuan E.Zaffaroni M.Zavertyaev M.Zdybal O.Zenaiev M.Zeng C.Zhang D.Zhang l.zhang S.Zhang S.Zhang Y.Zhang Y.Zhang A.Zharkova A.Zhelezov Y.Zheng T.Zhou X.Zhou Y.Zhou V.Zhovkovska X.Zhu X.Zhu Z.Zhu V.Zhukov Q.Zou S.Zucchelli D.Zuliani G.Zunica LHCb Collaboration 《Chinese Physics C》 SCIE CAS CSCD 2023年第9期14-26,共13页
A search for the rare decays W^(+)→D_(s)^(+)γ and Z→D0γis performed using proton-proton collision data collected by the LHCb experiment at a centre-of-mass energy of 13TeV,corresponding to an integrated luminosity... A search for the rare decays W^(+)→D_(s)^(+)γ and Z→D0γis performed using proton-proton collision data collected by the LHCb experiment at a centre-of-mass energy of 13TeV,corresponding to an integrated luminosity of 2.0fb−1.No significant signal is observed for either decay mode and upper limits on their branching fractions are set using W^(+)→D_(s)^(+)γ and Z→μ+μ−decays as normalization channels.The upper limits are 6.5×10^(−4) and 2.1×10^(−3) at 95% confidence level for the W^(+)→D_(s)^(+)γ and Z→D^(0)γ decay modes,respectively.This is the first reported search for the Z→D^(0)γ decay,while the upper limit on the W+→D+sγbranching fraction improves upon the previous best limit. 展开更多
关键词 W/Z boson rare decay upper limit of branching fraction
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Influence of high configuration entropy on damping behaviors of Ti-Zr-Hf-Ni-Co-Cu high entropy alloys
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作者 W.Q.Wu l.zhang +3 位作者 K.K.Song J.M.Pelletier H.F.Zhang J.C.Qiao 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2023年第22期242-253,共12页
TiNi-based shape memory alloys(SMAs)have been used as damping materials to eliminate noise and mechanical vibration.However,their application is limited by low working temperatures and damping capacity.In this work,tw... TiNi-based shape memory alloys(SMAs)have been used as damping materials to eliminate noise and mechanical vibration.However,their application is limited by low working temperatures and damping capacity.In this work,two novel Ti-Zr-Hf-Ni-Co-Cu high entropy shape memory alloys(HESMAs)with different transformation temperatures and damping properties were investigated.The results show that Ti_(25)Zr_(8)Hf_(17)Ni_(30)Co_(5)Cu_(15) has superior damping performance arising from martensitic transformation,shape memory effect(thermal cycle at constant load)as well as superelasticity.Compared to traditional TiNi-based SMAs,the as-cast HESMAs exhibit a much higher ultrahigh yield strength(∼2 GPa)and storage modulus(∼50 GPa).The high configuration entropy of the HESMAs with high uneven internal stress and severe lattice distortion is revealed as the underlying mechanisms governing distinctive damping performance.The effects of high configuration entropy and microheterogeneity on the martensitic transforma-tion behavior and damping performance of HESMAs are clarified in this work,which provides a basis for designing alloys with superior damping properties. 展开更多
关键词 High entropy s hape memory alloy Internal friction Damping Configuration entropy Martensitic transformation
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Future Physics Programme of BESⅢ 被引量:542
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作者 M.Ablikim M.N.Achasov +486 位作者 P.Adlarson S.Ahmed M.Albrecht M.Alekseev A.Amoroso F.F.An Q.An Y.Bai O.Bakina R.Baldini Ferroli Y.Ban K.Begzsuren J.V.Bennett N.Berger M.Bertani D.Bettoni F.Bianchi J Biernat J.Bloms I.Boyko R.A.Briere L.Calibbi H.Cai X.Cai A.Calcaterra G.F.Cao N.Cao S.A.Cetin J.Chai J.F.Chang W.L.Chang J.Charles G.Chelkov Chen G.Chen H.S.Chen J.C.Chen M.L.Chen S.J.Chen Y.B.Chen H.Y.Cheng W.Cheng G.Cibinetto F.Cossio X.F.Cui H.L.Dai J.P.Dai X.C.Dai A.Dbeyssi D.Dedovich Z.Y.Deng A.Denig Denysenko M.Destefanis S.Descotes-Genon F.De Mori Y.Ding C.Dong J.Dong L.Y.Dong M.Y.Dong Z.L.Dou S.X.Du S.I.Eidelman J.Z.Fan J.Fang S.S.Fang Y.Fang R.Farinelli L.Fava F.Feldbauer G.Felici C.Q.Feng M.Fritsch C.D.Fu Y.Fu Q.Gao X.L.Gao Y.Gao Y.Gao Y.G.Gao Z.Gao B.Garillon I.Garzia E.M.Gersabeck A.Gilman K.Goetzen L.Gong W.X.Gong W.Gradl M.Greco L.M.Gu M.H.Gu Y.T.Gu A.Q.Guo F.K.Guo L.B.Guo R.P.Guo Y.P.Guo A.Guskov S.Han X.Q.Hao F.A.Harris K.L.He F.H.Heinsius T.Held Y.K.Heng Y.R.Hou Z.L.Hou H.M.Hu J.F.Hu T.Hu Y.Hu G.S.Huang J.S.Huang X.T.Huang X.Z.Huang Z.L.Huang N.Huesken T.Hussain W.Ikegami Andersson W.Imoehl M.Irshad Q.Ji Q.P.Ji X.B.Ji X.L.Ji H.L.Jiang X.S.Jiang X.Y.Jiang J.B.Jiao Z.Jiao D.P.Jin S.Jin Y.Jin T.Johansson N.Kalantar-Nayestanaki X.S.Kang R.Kappert M.Kavatsyuk B.C.Ke I.K.Keshk T.Khan A.Khoukaz P.Kiese R.Kiuchi R.Kliemt L.Koch O.B.Kolcu B.Kopf M.Kuemmel M.Kuessner A.Kupsc M.Kurth M.G.Kurth W.Kuhn J.S.Lange P.Larin L.Lavezzi H.Leithoff T.Lenz C.Li Cheng Li D.M.Li F.Li F.Y.Li G.Li H.B.Li H.J.Li J.C.Li J.W.Li Ke Li L.K.Li Lei Li P.L.Li P.R.Li Q.Y.Li W.D.Li W.G.Li X.H.Li X.L.Li X.N.Li X.Q.Li Z.B.Li H.Liang H.Liang Y.F.Liang Y.T.Liang G.R.Liao L.Z.Liao J.Libby C.X.Lin D.X.Lin Y.J.Lin B.Liu B.J.Liu C.X.Liu D.Liu D.Y.Liu F.H.Liu Fang Liu Feng Liu H.B.Liu H.M.Liu Huanhuan Liu Huihui Liu J.B.Liu J.Y.Liu K.Y.Liu Ke Liu Q.Liu S.B.Liu T.Liu X.Liu X.Y.Liu Y.B.Liu Z.A.Liu Zhiqing Liu Y.F.Long X.C.Lou H.J.Lu J.D.Lu J.G.Lu Y.Lu Y.P.Lu C.L.Luo M.X.Luo P.W.Luo T.Luo X.L.Luo S.Lusso X.R.Lyu F.C.Ma H.L.Ma L.L.Ma M.M.Ma Q.M.Ma X.N.Ma X.X.Ma X.Y.Ma Y.M.Ma F.E.Maas M.Maggiora S.Maldaner S.Malde Q.A.Malik A.Mangoni Y.J.Mao Z.P.Mao S.Marcello Z.X.Meng J.G.Messchendorp G.Mezzadri J.Min T.J.Min R.E.Mitchell X.H.Mo Y.J.Mo C.Morales Morales N.Yu.Muchnoi H.Muramatsu A.Mustafa S.Nakhoul Y.Nefedov F.Nerling I.B.Nikolaev Z.Ning S.Nisar S.L.Niu S.L.Olsen Q.Ouyang S.Pacetti Y.Pan M.Papenbrock P.Patteri M.Pelizaeus H.P.Peng K.Peters A.A.Petrov J.Pettersson J.L.Ping R.G.Ping A.Pitka R.Poling V.Prasad M.Qi T.Y.Qi S.Qian C.F.Qiao N.Qin X.P.Qin X.S.Qin Z.H.Qin J.F.Qiu S.Q.Qu K.H.Rashid C.F.Redmer M.Richter M.Ripka A.Rivetti V.Rodin M.Rolo G.Rong J.L.Rosner Ch.Rosner M.Rump A.Sarantsev M.Savrie K.Schoenning W.Shan X.Y.Shan M.Shao C.P.Shen P.X.Shen X.Y.Shen H.Y.Sheng X.Shi X.D Shi J.J.Song Q.Q.Song X.Y.Song S.Sosio C.Sowa S.Spataro F.F.Sui G.X.Sun J.F.Sun L.Sun S.S.Sun X.H.Sun Y.J.Sun Y.K Sun Y.Z.Sun Z.J.Sun Z.T.Sun Y.T Tan C.J.Tang G.Y.Tang X.Tang V.Thoren B.Tsednee I.Uman B.Wang B.L.Wang C.W.Wang D.Y.Wang H.H.Wang K.Wang L.L.Wang L.S.Wang M.Wang M.Z.Wang Wang Meng P.L.Wang R.M.Wang W.P.Wang X.Wang X.F.Wang X.L.Wang Y.Wang Y.F.Wang Z.Wang Z.G.Wang Z.Y.Wang Zongyuan Wang T.Weber D.H.Wei P.Weidenkaff H.W.Wen S.P.Wen U.Wiedner G.Wilkinson M.Wolke L.H.Wu L.J.Wu Z.Wu L.Xia Y.Xia S.Y.Xiao Y.J.Xiao Z.J.Xiao Y.G.Xie Y.H.Xie T.Y.Xing X.A.Xiong Q.L.Xiu G.F.Xu L.Xu Q.J.Xu W.Xu X.P.Xu F.Yan L.Yan W.B.Yan W.C.Yan Y.H.Yan H.J.Yang H.X.Yang L.Yang R.X.Yang S.L.Yang Y.H.Yang Y.X.Yang Yifan Yang Z.Q.Yang M.Ye M.H.Ye J.H.Yin Z.Y.You B.X.Yu C.X.Yu J.S.Yu C.Z.Yuan X.Q.Yuan Y.Yuan A.Yuncu A.A.Zafar Y.Zeng B.X.Zhang B.Y.Zhang C.C.Zhang D.H.Zhang H.H.Zhang H.Y.Zhang J.Zhang J.l.zhang J.Q.Zhang J.W.Zhang J.Y.Zhang J.Z.Zhang K.Zhang l.zhang S.F.Zhang T.J.Zhang X.Y.Zhang Y.Zhang Y.H.Zhang Y.T.Zhang Yang Zhang Yao Zhang Yi Zhang Yu Zhang Z.H.Zhang Z.P.Zhang Z.Q.Zhang Z.Y.Zhang G.Zhao J.W.Zhao J.Y.Zhao J.Z.Zhao Lei Zhao Ling Zhao M.G.Zhao Q.Zhao S.J.Zhao T.C.Zhao Y.B.Zhao Z.G.Zhao A.Zhemchugov B.Zheng J.P.Zheng Y.Zheng Y.H.Zheng B.Zhong L.Zhou L.P.Zhou Q.Zhou X.Zhou X.K.Zhou Xingyu Zhou Xiaoyu Zhou Xu Zhou A.N.Zhu J.Zhu J.Zhu K.Zhu K.J.Zhu S.H.Zhu W.J.Zhu X.L.Zhu Y.C.Zhu Y.S.Zhu Z.A.Zhu J.Zhuang B.S.Zou J.H.Zou 《Chinese Physics C》 SCIE CAS CSCD 2020年第4期I0001-I0004,1-102,共106页
There has recently been a dramatic renewal of interest in hadron spectroscopy and charm physics. This renaissance has been driven in part by the discovery of a plethora of charmonium-like XYZ states at BESⅢ and B fac... There has recently been a dramatic renewal of interest in hadron spectroscopy and charm physics. This renaissance has been driven in part by the discovery of a plethora of charmonium-like XYZ states at BESⅢ and B factories, and the observation of an intriguing proton-antiproton threshold enhancement and the possibly related X(1835) meson state at BESⅢ, as well as the threshold measurements of charm mesons and charm baryons. We present a detailed survey of the important topics in tau-charm physics and hadron physics that can be further explored at BESⅢ during the remaining operation period of BEPCⅡ. This survey will help in the optimization of the data-taking plan over the coming years, and provides physics motivation for the possible upgrade of BEPCⅡ to higher luminosity. 展开更多
关键词 MESON HADRON optimization
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Study of the production of Λ_b^0 band ~0 hadrons in pp collisions and first measurement of the Λ_b^0→J/ψpK^- branching fraction 被引量:24
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作者 O.Kochebina M.Kolpin +398 位作者 I.Komarov R.F.Koopman P.Koppenburg M.Kozeiha L.Kravchuk K.Kreplin M.Kreps G.Krocker P.Krokovny F.Kruse W.Krzemien W.Kucewicz M.Kucharczyk V.Kudryavtsev A.K.Kuonen K.Kurek T.Kvaratskheliya D.Lacarrere G.Lafferty A.Lai D.Lambert G.Lanffanchi C.Langenbruch B.Langhans T.Latham C.Lazzeroni R.Le Gac J.van Leerdam J.-P.Lees R.Lefevre A.Leflat J.Lefrancois E.Lemos Cid O.Leroy T.Lesiak B.Leverington Y.Li T.Likhomanenko M.Liles R.Lindner C.Linn F.Lionetto B.Liu X.Liu D.Loh I.Longstaff J.H.Lopes D.Lucchesi M.Lucio Martinez H.Luo A.Lupato E.Luppi O.Lupton A.Lusiani F.Machefert F.Maciuc O.Maev K.Maguire S.Malde A.Malinin G.Manca G.Mancinelli P.Manning A.Mapelli J.Maratas J.F.Marchand U.Marconi C.Marin Benito P.Marino J.Marks G.Martellottil M.Martin M.Martinelli D.Martinez Santos F.Martinez Vidal D.Martins Tostes A.Massafferri R.Matev A.Mathad Z.Mathe C.Matteuzzi A.Mauri B.Maurin A.Mazurov M.McCann J.McCarthy A.McNab R.McNulty B.Meadows F.Meier M.Meissner D.Melnychuk M.Merk E Michielin D.A.Milanes M.-N.Minard D.S.Mitzel J.Molina Rodrigue I.A.Monroy S.Monteil M.Morandin P.Morawski A.Morda M.J.Morello J.Moron A.B.Morris R.Mountain F.Muheim D.Miiller J.Muller K.Muller V.Muller M.Mussini B.Muster P.Naik T.Nakada R.Nandakumar A.Nandi I.Nasteva M.Needham N.Neri S.Neubert N.Neufeld M.Neuner A.D.Nguyen T.D.Nguyen C.Nguyen-Mau V.Niess R.Niet N.Nikitin T.Nikodem D.Ninci A.Novoselov D.P.O'Hanlon A.Oblakowska-Mucha V.Obraztsov S.Ogilvy O.Okhrimenko R.Oldeman C.J.G.Onderwater B.Osorio Rodrigues J.M.Otalora Goicochea A.Otto P.Owen A.Oyanguren A.Palano F.Palombo M.Palutan J.Panman A.Papanestis M.Pappagallo L.L.Pappalardo C.Pappenheimer C.Parkes G.Passaleva G.D.Patel M.Patel C.Patrignani A.Pearce A.Pellegrino G.Penso M.Pepe Altarelli S.Perazzini P.Perret L.Pescatore K.Petridis A.Petrolini M.Petruzzo E.Picatoste Olloqui B.Pietrzyk T:.Pilar D.Pinci A.Pistone A.Piucci S.Playfer M.Plo Casasus T.Poikela F.Polci A.Poluektov I.Polyakov E.Polycarpo A.Popov D.Popov B.Popovici C.Potterat E.Price J.D.Price J.Prisciandaro A.Pritchard C.Prouve V.Pugatch A.Puig Navarro G.Punzi W.Qian R.Quagliani B.Rachwal J.H.Rademacker M.Rama M.S.Rangel I.Raniuk N.Rauschmayr G.Raven F.Redi S.Reichert M.M.Reid A.C.dos Reis S.Ricciardi S.Richards M.Rihl K.Rinnert V.Rives Molina P.Robbe A.B.Rodrigues E.Rodrigues J.A.Rodriguez Lopez P.Rodriguez Perez S.Roiser V.Romanovsky A.Romero Vidalt J.W.R onayne M.Rotondo J.Rouvinet T.Ruf P.Ruiz Valls J.J.Saborido Silva N.Sagidova P.Sail B.Saitta V.Salustino Guimaraes C.Sanchez Mayordomo B.Sanmartin Sedes R.Santacesaria C.Santamarina Rios M.Santimaria E.Santovetti A.Sarti C.Satriano A.Satta D.M.Saunders D.Savrina M.Schiller H.Schindler M.Schlupp M.Schmelling T.Schmelzer B.Schmidt O.Schneider A.Schopper M.Schubiger M.-H.Schune R.Schwemmer B.Sciascia A.Sciubba A.Semennikov N.Serra J.Serrano L.Sestini P.Seyfert M.Shapkin I.Shapoval Y.Shcheglov T.Shears L.Shekhtman V.Shevchenko A.Shires B.G.Siddi R.Silva Coutinho L.Silva de Oliveira G.Simi M.Sirendi N.Skidmore T.Skwarnicki E.Smith E.Smith I.T.Smith J.Smith M.Smith H.Snoek M.D.Sokoloff F.J.P.Soler F.Soomro D.Souza B.Souza De Paula B.Spaan P.Spradlin S.Sridharan F.Stagni M.Stahl S.Stahl S.Stefkova O.Steinkamp O.Stenyakin S.Stevenson S.Stoica S.Stone B.Storaci S.Stracka M.Straticiuc U.Straumann L.Sun W.Sutcliffe K.Swientek S.Swientek V.Syropoulos M.Szczekowski P.Szczypka T.Szumlak S.T'Jampens A.Tayduganov T.Tekampe M.T eklishyn G.Teilarini F.Teubert C.Thomas E.Thomas J.van Tilburg V.Tisserand M.Tobin J.Todd S.Tolk L.Tomassetti D.Tonelli S.Topp-Joergensen N.Torr E.Tournefier S.Tourneur K.Trabelsi M.T.Tran M.Tresch A.Trisovic A.Tsaregorodtsev P.Tsopelas N.Tuning A.Ukleja A.Ustyuzhanin U.Uwer C.Vacca V.Vagnonit G.Valentit A.Vallier R.Vazquez Gomez P.Vazquez Regueiro C.Vazquez Sierra S.Vecchi J.J.Velthuis M.Veltri G.Veneziano M.Vesterinen B.Viaud D.Vieira M.Vieites Diaz X.Vitasis-Cardona V.Volkov A.Vollhardt D.Volyanskyy D.Voong A.Vorobyev V.Vorobyev C.Voβ J.A.de Vries R.Waldi C.Wallace R.Wallace J.Walsh S.Wandernoth J.Wang D.R.Ward N.K.Watson D.Websdale A.Weiden M.Whitehead G.Wilkinson M.Wilkinson M.Williams M.P.Williams T.Williams F.F.Wilson J.Wimberley J.Wishahi W.Wislicki M.Witek G.Wormser S.A.Wotton S.Wright K.Wyllie Y.Xie Z.Xu Z.Yang J.Yu X.Yuan O.Yushchenko M.Zangoli M.Zavertyaev l.zhang Y.Zhang A.Zhelezov A.Zhokhov L.Zhong S.Zucchelli 《Chinese Physics C》 SCIE CAS CSCD 2016年第1期1-16,共16页
The product of the ∧0/b (-B/0) differential production cross-section and the branching fraction of the decay ∧0/b→ J/ψ pK-(-B/0→ J/ψ-K*(892)0)is measured as a function of the beauty hadron transverse mome... The product of the ∧0/b (-B/0) differential production cross-section and the branching fraction of the decay ∧0/b→ J/ψ pK-(-B/0→ J/ψ-K*(892)0)is measured as a function of the beauty hadron transverse momentum, PT, and rapidity, y. The kinematic region of the measurements is pT〈20 GeV/c and 2.0 〈g〈4.5.The measurements use a data sample corresponding to an integrated luminosity of 3fb-1 collected by the LHCb detector in pp collisions at centre-of-mass energies √s=7 TeV in 2011 and √s=8 TeV in 2012. Based on previous LHCb results of the fragmentation fraction ratio,f∧0/b/fd,the branching fraction of the decay ∧0/b→ J/ψ pK-is measured to be B(∧0/b→ J/ψ pK-)=(3.17±0.04±0.07±0.34+0.45/-0.28)×10-4,where the first uncertainty is statistical, the second is systematic, the third is due to the uncertainty on the branching fraction of the decay -B/0 →J/ψ-K*(892)0,and the fourth is due to the knowledge of f∧0/b/fd.The sum of the asymmetries in the production and decay between ∧0/b and ∧0/bis also measured as a function of PT and y.The previously published branching fraction of ∧0/b→ J/ψ pπ-,relative to that of ∧0/b→ J/ψ pK-,is updated. The branching fractions of ∧0/b→P+c(→ J/ψp)K-are determined. 展开更多
关键词 production cross-section branching fraction b hadrons proton-proton collisions
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Observation of the Crab Nebula with LHAASO-KM2A−a performance study 被引量:10
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作者 F.Aharonian Q.An +245 位作者 Axikegu L.X.Bai Y.X.Bai Y.W.Bao D.Bastieri X.J.Bi Y.J.Bi H.Cai J.T.Cai Z.Cao J.Chang J.F.Chang X.C.Chang B.M.Chen J.Chen L.Chen M.J.Chen M.L.Chen Q.H.Chen S.H.Chen S.Z.Chen T.L.Chen X.L.Chen Y.Chen N.Cheng Y.D.Cheng S.W.Cui X.H.Cui Y.D.Cui B.Z.Dai H.L.Dai Z.G.Dai D.della Volpe B.D'Ettorre Piazzoli X.J.Dong J.H.Fan Y.Z.Fan Z.X.Fan J.Fang K.Fang C.F.Feng L.Feng S.H.Feng Y.L.Feng B.Gao C.D.Gao Q.Gao W.Gao M.M.Ge L.S.Geng G.H.Gong Q.B.Gou M.H.Gu J.G.Guo X.L.Guo Y.Q.Guo Y.Y.Guo Y.A.Han H.H.He H.N.He J.C.He S.L.He X.B.He Y.He M.Heller Y.K.Hor C.Hou X.Hou H.B.Hu S.Hu S.C.Hu X.J.Hu D.H.Huang Q.L.Huang W.H.Huang X.T.Huang Z.C.Huang F.Ji X.L.Ji H.Y.Jia K.Jiang Z.J.Jiang C.Jin D.Kuleshov K.Levochkin B.B.Li C.Li F.Li H.B.Li H.C.Li H.Y.Li J.Li K.Li W.L.Li X.Li X.R.Li Y.Li Y.Z.Li Z.Li E.W.Liang Y.F.Liang S.J.Lin B.Liu C.Liu D.Liu H.Liu H.D.Liu J.Liu J.L.Liu J.S.Liu J.Y.Liu M.Y.Liu R.Y.Liu S.M.Liu W.Liu Y.N.Liu Z.X.Liu W.J.Long R.Lu H.K.Lv B.Q.Ma L.L.Ma X.H.Ma J.R.Mao A.Masood W.Mitthumsiri T.Montaruli Y.C.Nan B.Y.Pang P.Pattarakijwanich Z.Y.Pei M.Y.Qi D.Ruffolo V.Rulev A.Sáiz L.Shao O.Shchegolev X.D.Sheng J.R.Shi H.C.Song Yu.V.Stenkin V.Stepanov Q.N.Sun X.N.Sun Z.B.Sun P.H.T.Tam Z.B.Tang W.W.Tian B.D.Wang C.Wang H.Wang H.G.Wang J.C.Wang J.S.Wang L.P.Wang L.Y.Wang R.N.Wang W.Wang X.G.Wang X.J.Wang X.Y.Wang Y.D.Wang Y.J.Wang Y.P.Wang Z.Wang Z.H.Wang Z.X.Wang D.M.Wei J.J.Wei Y.J.Wei T.Wen C.Y.Wu H.R.Wu S.Wu W.X.Wu X.F.Wu S.Q.Xi J.Xia J.J.Xia G.M.Xiang G.Xiao H.B.Xiao G.G.Xin Y.L.Xin Y.Xing D.L.Xu R.X.Xu L.Xue D.H.Yan C.W.Yang F.F.Yang J.Y.Yang L.L.Yang M.J.Yang R.Z.Yang S.B.Yang Y.H.Yao Z.G.Yao Y.M.Ye L.Q.Yin N.Yin X.H.You Z.Y.You Y.H.Yu Q.Yuan H.D.Zeng T.X.Zeng W.Zeng Z.K.Zeng M.Zha X.X.Zhai B.B.Zhang H.M.Zhang H.Y.Zhang J.l.zhang J.W.Zhang l.zhang L.X.Zhang P.F.Zhang P.P.Zhang R.Zhang S.R.Zhang S.S.Zhang X.Zhang X.P.Zhang Y.Zhang Y.F.Zhang Y.l.zhang B.Zhao J.Zhao L.Zhao L.Z.Zhao S.P.Zhao F.Zheng Y.Zheng B.Zhou H.Zhou J.N.Zhou P.Zhou R.Zhou X.X.Zhou C.G.Zhu F.R.Zhu H.Zhu K.J.Zhu X.Zuo 《Chinese Physics C》 SCIE CAS CSCD 2021年第2期518-530,共13页
A sub-array of the Large High Altitude Air Shower Observatory(LHAASO),KM2A is mainly designed to observe a large fraction of the northern sky to hunt for γ-ray sources at energies above 10 TeV.Even though the detecto... A sub-array of the Large High Altitude Air Shower Observatory(LHAASO),KM2A is mainly designed to observe a large fraction of the northern sky to hunt for γ-ray sources at energies above 10 TeV.Even though the detector construction is still underway,half of the KM2A array has been operating stably since the end of 2019.In this paper,we present the KM2A data analysis pipeline and the first observation of the Crab Nebula,a standard candle in very high energy γ-ray astronomy.We detect γ-ray signals from the Crab Nebula in both energy ranges of 10-100 TeV and>100 TeV with high significance,by analyzing the KM2A data of 136 live days between December 2019 and May 2020.With the observations,we test the detector performance,including angular resolution,pointing accuracy and cosmic-ray background rejection power.The energy spectrum of the Crab Nebula in the energy range 10-250 TeV fits well with a single power-law function dN/dE=(1.13±0.05stat±0.08sys)×10^(-14).(E/20 TeV)-309±0.06stat±0.02syscm^(-2) s^(-1) TeV^(-1).It is consistent with previous measurements by other experiments.This opens a new window of γ-ray astronomy above 0.1 PeV through which new ultrahigh-energy γ-ray phenomena,such as cosmic PeVatrons,might be discovered. 展开更多
关键词 Γ-RAY Crab Nebula extensive air showers cosmic rays
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Performance of LHAASO-WCDA and observation of the Crab Nebula as a standard candle 被引量:5
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作者 F.Aharonian Q.An +257 位作者 Axikegu L.X.Bai Y.X.Bai Y.W.Bao D.Bastieri X.J.Bi Y.J.Bi H.Cai J.T.Cai Z.Cao Z.Cao J.Chang J.F.Chang X.C.Chang B.M.Chen J.Chen L.Chen L.Chen L.Chen M.J.Chen M.L.Chen Q.H.Chen S.H.Chen S.Z.Chen T.L.Chen X.L.Chen Y.Chen N.Cheng Y.D.Cheng S.W.Cui X.H.Cui Y.D.Cui B.Z.Dai H.L.Dai Z.G.Dai Danzengluobu D.della Volpe B.D'Ettorre Piazzoli X.J.Dong J.H.Fan Y.Z.Fan Z.X.Fan J.Fang K.Fang C.F.Feng L.Feng S.H.Feng Y.L.Feng B.Gao C.D.Gao Q.Gao W.Gao M.M.Ge L.S.Geng G.H.Gong Q.B.Gou M.H.Gu J.G.Guo X.L.Guo Y.Q.Guo Y.Y.Guo Y.A.Han H.H.He H.N.He J.C.He S.L.He X.B.He Y.He M.Heller Y.K.Hor C.Hou X.Hou H.B.Hu S.Hu S.C.Hu X.J.Hu D.H.Huang Q.L.Huang W.H.Huang X.T.Huang Z.C.Huang F.Ji X.L.Ji H.Y.Jia K.Jiang Z.J.Jiang C.Jin D.Kuleshov K.Levochkin B.B.Li C.Li C.Li F.Li H.B.Li H.C.Li H.Y.Li J.Li K.Li W.L.Li X.Li X.Li X.R.Li Y.Li Y.Z.Li Z.Li Z.Li E.W.Liang Y.F.Liang S.J.Lin B.Liu C.Liu D.Liu H.Liu H.D.Liu J.Liu J.L.Liu J.S.Liu J.Y.Liu M.Y.Liu R.Y.Liu S.M.Liu W.Liu Y.N.Liu Z.X.Liu W.J.Long R.Lu H.K.Lv B.Q.Ma L.L.Ma X.H.Ma J.R.Mao A.Masood W.Mitthumsiri T.Montaruli Y.C.Nan B.Y.Pang P.Pattarakijwanich Z.Y.Pei M.Y.Qi B.Q.Qiao D.Ruffolo V.Rulev A.Saiz L.Shao O.Shchegolev X.D.Sheng J.R.Shi H.C.Song Yu.V.Stenkin V.Stepanov Q.N.Sun X.N.Sun Z.B.Sun P.H.T.Tam Z.B.Tang W.W.Tian B.D.Wang C.Wang H.Wang H.G.Wang J.C.Wang J.S.Wang L.P.Wang L.Y.Wang R.N.Wang W.Wang W.Wang X.G.Wang X.J.Wang X.Y.Wang Y.D.Wang Y.J.Wang Y.P.Wang Z.Wang Z.Wang Z.H.Wang Z.X.Wang D.M.Wei J.J.Wei Y.J.Wei T.Wen C.Y.Wu H.R.Wu S.Wu W.X.Wu X.F.Wu S.Q.Xi J.Xia J.J.Xia G.M.Xiang G.Xiao H.B.Xiao G.G.Xin Y.L.Xin Y.Xing D.L.Xu R.X.Xu L.Xue D.H.Yan C.W.Yang F.F.Yang J.Y.Yang L.L.Yang M.J.Yang R.Z.Yang S.B.Yang Y.H.Yao Z.G.Yao Y.M.Ye L.Q.Yin N.Yin X.H.You Z.Y.You Y.H.Yu Q.Yuan H.D.Zeng T.X.Zeng W.Zeng Z.K.Zeng M.Zha X.X.Zhai B.B.Zhang H.M.Zhang H.Y.Zhang J.l.zhang J.W.Zhang l.zhang l.zhang L.X.Zhang P.F.Zhang P.P.Zhang R.Zhang S.R.Zhang S.S.Zhang X.Zhang X.P.Zhang Y.Zhang Y.Zhang Y.F.Zhang Y.l.zhang B.Zhao J.Zhao L.Zhao L.Z.Zhao S.P.Zhao F.Zheng Y.Zheng B.Zhou H.Zhou J.N.Zhou P.Zhou R.Zhou X.X.Zhou C.G.Zhu F.R.Zhu H.Zhu K.J.Zhu X.Zuo 《Chinese Physics C》 SCIE CAS CSCD 2021年第8期166-181,共16页
The first Water Cherenkov detector of the LHAASO experiment(WCDA-1)has been operating since April 2019.The data for the first year have been analyzed to test its performance by observing the Crab Nebula as a standard ... The first Water Cherenkov detector of the LHAASO experiment(WCDA-1)has been operating since April 2019.The data for the first year have been analyzed to test its performance by observing the Crab Nebula as a standard candle.The WCDA-1 achieves a sensitivity of 65 mCU per year,with a statistical threshold of 5 cr.To accomplish this,a 97.7%cosmic-ray background rejection rate around 1 TeV and 99.8%around 6 TeV with an ap proximate photon acceptance of 50%is achieved after applying an algorithm to separate gamma-induced showers.The angular resolution is measured using the Crab Nebula as a point source to be approximately 0.45°at 1 TeV and better than 0.2°above 6 TeV,with a pointing accuracy better than 0.05°.These values all match the design specifications.The energy resolution is found to be 33%for gamma rays around 6 TeV.The spectral energy distribution of the Crab Nebula in the range from 500 GeV to 15.8 TeV is measured and found to be in agreement with the results from other TeV gamma ray observatories. 展开更多
关键词 LHAASO-WCDA Crab Nebula angular resolution spectral energy distribution
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Evidence of a J/ψΛstructure and observation of excited■^(-)states in the■b^(-)→J/ψΛK^(-) decay 被引量:3
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作者 R.Aaij C.Abellán Beteta +966 位作者 T.Ackernley B.Adeva M.Adinolfi H.Afsharnia C.A.Aidala S.Aiola Z.Ajaltouni S.Akar J.Albrecht F.Alessio M.Alexander A.Alfonso Albero Z.Aliouche G.Alkhazov P.Alvarez Cartelle S.Amato Y.Amhis L.An L.Anderlini A.Andreianov M.Andreotti F.Archilli A.Artamonov M.Artuso K.Arzymatov E.Aslanides M.Atzeni B.Audurier S.Bachmann M.Bachmayer J.J.Back S.Baker P.Baladron Rodriguez V.Balagura W.Baldini J.Baptista Leite R.J.Barlow S.Barsuk W.Barter M.Bartolini F.Baryshnikov J.M.Basels G.Bassi B.Batsukh A.Battig A.Bay M.Becker F.Bedeschi I.Bediaga A.Beiter V.Belavin S.Belin V.Bellee K.Belous I.Belov I.Belyaev G.Bencivenni E.Ben-Haim A.Berezhnoy R.Bernet D.Berninghoff H.C.Bernstein C.Bertella E.Bertholet A.Bertolin C.Betancourt F.Betti Ia.Bezshyiko S.Bhasin J.Bhom L.Bian M.S.Bieker S.Bifani P.Billoir M.Birch F.C.R.Bishop A.Bizzeti M.Bj┆rn M.P.Blago T.Blake F.Blanc S.Blusk D.Bobulska J.A.Boelhauve O.Boente Garcia T.Boettcher A.Boldyrev A.Bondar N.Bondar S.Borghi M.Borisyak M.Borsato J.T.Borsuk S.A.Bouchiba T.J.V.Bowcock A.Boyer C.Bozzi M.J.Bradley S.Braun A.Brea Rodriguez M.Brodski J.Brodzicka A.Brossa Gonzalo D.Brundu A.Buonaura C.Burr A.Bursche A.Butkevich J.S.Butter J.Buytaert W.Byczynski S.Cadeddu H.Cai R.Calabrese L.Calefice L.Calero Diaz S.Cali R.Calladine M.Calvi M.Calvo Gomez P.Camargo Magalhaes A.Camboni P.Campana A.F.Campoverde Quezada S.Capelli L.Capriotti A.Carbone G.Carboni R.Cardinale A.Cardini I.Carli P.Carniti L.Carus K.Carvalho Akiba A.Casais Vidal G.Casse M.Cattaneo G.Cavallero S.Celani J.Cerasoli A.J.Chadwick M.G.Chapman M.Charles Ph.Charpentier G.Chatzikonstantinidis C.A.Chavez Barajas M.Chefdeville C.Chen S.Chen A.Chernov S.-G.Chitic V.Chobanova S.Cholak M.Chrzaszcz A.Chubykin V.Chulikov P.Ciambrone M.F.Cicala X.Cid Vidal G.Ciezarek P.E.L.Clarke M.Clemencic H.V.Cliff J.Closier J.L.Cobbledick V.Coco J.A.B.Coelho J.Cogan E.Cogneras L.Cojocariu P.Collins T.Colombo L.Congedo A.Contu N.Cooke G.Coombs G.Corti C.M.Costa Sobral B.Couturier D.C.Craik J.Crkovská M.Cruz Torres R.Currie C.L.Da Silva E.Dall’Occo J.Dalseno C.D’Ambrosio A.Danilina P.d’Argent A.Davis O.De Aguiar Francisco K.De Bruyn S.De Capua M.De Cian J.M.De Miranda L.De Paula M.De Serio D.De Simone P.De Simone J.A.de Vries C.T.Dean W.Dean D.Decamp L.Del Buono B.Delaney H.-P.Dembinski A.Dendek V.Denysenko D.Derkach O.Deschamps F.Desse F.Dettori B.Dey P.Di Nezza S.Didenko L.Dieste Maronas H.Dijkstra V.Dobishuk A.M.Donohoe F.Dordei A.C.dos Reis L.Douglas A.Dovbnya A.G.Downes K.Dreimanis M.W.Dudek L.Dufour V.Duk P.Durante J.M.Durham D.Dutta M.Dziewiecki A.Dziurda A.Dzyuba S.Easo U.Egede V.Egorychev S.Eidelman S.Eisenhardt S.Ek-In L.Eklund S.Ely A.Ene E.Epple S.Escher J.Eschle S.Esen T.Evans A.Falabella J.Fan Y.Fan B.Fang N.Farley S.Farry D.Fazzini P.Fedin M.Féo P.Fernandez Declara A.Fernandez Prieto J.M.Fernandeztenllado Arribas F.Ferrari L.Ferreira Lopes F.Ferreira Rodrigues S.Ferreres Sole M.Ferrillo M.Ferro-Luzzi S.Filippov R.A.Fini M.Fiorini M.Firlej K.M.Fischer C.Fitzpatrick T.Fiutowski F.Fleuret M.Fontana F.Fontanelli R.Forty V.Franco Lima M.Franco Sevilla M.Frank E.Franzoso G.Frau C.Frei D.A.Friday J.Fu Q.Fuehring W.Funk E.Gabriel T.Gaintseva A.Gallas Torreira D.Galli S.Gambetta Y.Gan M.Gandelman P.Gandini Y.Gao M.Garau L.M.Garcia Martin P.Garcia Moreno J.García Pardiñas B.Garcia Plana F.A.Garcia Rosales L.Garrido C.Gaspar R.E.Geertsema D.Gerick L.L.Gerken E.Gersabeck M.Gersabeck T.Gershon D.Gerstel Ph.Ghez V.Gibson M.Giovannetti A.Gioventù P.Gironella Gironell L.Giubega C.Giugliano K.Gizdov E.L.Gkougkousis V.V.Gligorov C.Göbel E.Golo-bardes D.Golubkov A.Golutvin A.Gomes S.Gomez Fernandez F.Goncalves Abrantes M.Goncerz G.Gong P.Gorbounov I.V.Gorelov C.Gotti E.Govorkova J.P.Grabowski R.Graciani Diaz T.Grammatico L.A.Granado Cardoso E.Graugés E.Graverini G.Graziani A.Grecu L.M.Greeven P.Griffith L.Grillo S.Gromov B.R.Gruberg Cazon C.Gu M.Guarise P.A.Günther E.Gushchin A.Guth Y.Guz T.Gys T.Hadavizadeh G.Haefeli C.Haen 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W.Wislicki M.Witek L.Witola G.Wormser S.A.Wotton H.Wu K.Wyllie Z.Xiang D.Xiao Y.Xie A.Xu J.Xu L.Xu M.Xu Q.Xu Z.Xu Z.Xu D.Yang S.Yang Y.Yang Z.Yang Z.Yang Y.Yao L.E.Yeomans H.Yin J.Yu X.Yuan O.Yushchenko E.Zaffaroni K.A.Zarebski M.Zavertyaev M.Zdybal O.Zenaiev M.Zeng D.Zhang l.zhang S.Zhang Y.Zhang Y.Zhang A.Zhelezov Y.Zheng X.Zhou Y.Zhou X.Zhu V.Zhukov J.B.Zonneveld S.Zucchelli D.Zuliani G.Zunica 《Science Bulletin》 SCIE EI CSCD 2021年第13期1278-1287,M0003,共11页
First evidence of a structure in the J/ψΛinvariant mass distribution is obtained from an amplitude analysis of■b^(-)J/ψΛK^(-)decays.The observed structure is consistent with being due to a charmonium pentaquark w... First evidence of a structure in the J/ψΛinvariant mass distribution is obtained from an amplitude analysis of■b^(-)J/ψΛK^(-)decays.The observed structure is consistent with being due to a charmonium pentaquark with strangeness with a significance of 3.1r including systematic uncertainties and lookelsewhere effect.Its mass and width are determined to be 4458:8±2:9t4:7-1:1 MeV and 17:3±6:5t8:0-5:7 MeV,respectively,where the quoted uncertainties are statistical and systematic.The structure is also consistent with being due to two resonances.In addition,the narrow excited■^(-)states,N■(1690)and■(1820),are seen for the first time in a■b^(-)decay,and their masses and widths are measured with improved precision.The analysis is performed using pp collision data corresponding to a total integrated luminosity of 9 fb^(-1),collected with the LHCb experiment at centre-of-mass energies of 7,8 and 13 TeV. 展开更多
关键词 QCD EXOTICS PENTAQUARK Spectroscopy Quarkonium Particle and resonance production
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Search for the doubly charmed baryon ■ 被引量:3
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作者 R.Aaij C.Abellán Beteta +907 位作者 T.Ackernley B.Adeva M.Adinolfi H.Afsharnia C.A.Aidala S.Aiola Z.Ajaltouni S.Akar P.Albicocco J.Albrecht F.Alessio M.Alexander A.Alfonso Albero G.Alkhazov P.Alvarez Cartelle A.A.Alves Jr S.Amato Y.Amhis L.An L.Anderlini G.Andreassi M.Andreotti F.Archilli J.Arnau Romeu A.Artamonov M.Artuso K.Arzymatov E.Aslanides M.Atzeni B.Audurier S.Bachmann J.J.Back S.Baker V.Balagura W.Baldini A.Baranov R.J.Barlow S.Barsuk W.Barter M.Bartolini F.Baryshnikov G.Bassi V.Batozskaya B.Batsukh A.Battig V.Battista A.Bay M.Becker F.Bedeschi I.Bediaga A.Beiter L.J.Bel V.Belavin S.Belin N.Beliy V.Bellee K.Belous I.Belyaev G.Bencivenni E.Ben-Haim S.Benson S.Beranek A.Berezhnoy R.Bernet D.Berninghoff H.C.Bernstein E.Bertholet A.Bertolin C.Betancourt F.Betti M.O.Bettler Ia.Bezshyiko S.Bhasin J.Bhom M.S.Bieker S.Bifani P.Billoir A.Birnkraut A.Bizzeti M.Bjφrn M.P.Blago T.Blake F.Blanc S.Blusk D.Bobulska V.Bocci O.Boente Garcia T.Boettcher A.Boldyrev A.Bondar N.Bondar S.Borghi 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M.Vesterinen J.V.Viana Barbosa D.Vieira M.Vieites Diaz H.Viemann X.Vilasis-Cardona A.Vitkovskiy V.Volkov A.Vollhardt D.Vom Bruch A.Vorobyev V.Vorobyev N.Voropaev R.Waldi J.Walsh J.Wang J.Wang M.Wang Y.Wang Z.Wang D.R.Ward H.M.Wark N.K.Watson D.Websdale A.Weiden C.Weisser B.D.C.Westhenry D.J.White M.Whitehead D.Wiedner G.Wilkinson M.Wilkinson I.Williams M.Williams M.R.J.Williams T.Williams F.F.Wilson M.Winn W.Wislicki M.Witek G.Wormser S.A.Wotton H.Wu K.Wyllie Z.Xiang D.Xiao Y.Xie H.Xing A.Xu L.Xu M.Xu Q.Xu Z.Xu Z.Xu Z.Yang Z.Yang Y.Yao L.E.Yeomans H.Yin J.Yu X.Yuan O.Yushchenko K.A.Zarebski M.Zavertyaev M.Zdybal M.Zeng D.Zhang l.zhang S.Zhang W.C.Zhang Y.Zhang A.Zhelezov Y.Zheng X.Zhou Y.Zhou X.Zhu V.Zhukov J.B.Zonneveld S.Zucchelli 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS CSCD 2020年第2期8-22,共15页
A search for the doubly charmed baryon ■^+cc is performed through its decay to theΛ^+c K^-π^+ final state,using proton-proton collision data collected with the LHCb detector at centre-of-mass energies of 7,8 and 13... A search for the doubly charmed baryon ■^+cc is performed through its decay to theΛ^+c K^-π^+ final state,using proton-proton collision data collected with the LHCb detector at centre-of-mass energies of 7,8 and 13 TeV.The data correspond to a total integrated luminosity of 9 fb^-1.No significant signal is observed in the mass range from 3.4 to 3.8 GeV/c^2.Upper limits are set at 95%credibility level on the ratio of the ■^+cc production cross-section times the branching fraction to that ofΛ^+c and ■^++cc baryons.The limits are determined as functions of the ■^+cc mass for different lifetime hypotheses,in the rapidity range from 2.0 to 4.5 and the transverse momentum range from 4 to 15 GeV/c. 展开更多
关键词 charmed baryons limits on production of particles charmed quarks experimental tests
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Integrating modelling and remote sensing to identify ecosystem performance anomalies in the boreal forest,Yukon River Basin,Alaska 被引量:2
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作者 B.K.Wylie l.zhang +3 位作者 N.Bliss L.Ji L.L.Tieszen W.M.Jolly 《International Journal of Digital Earth》 SCIE 2008年第2期196-220,共25页
High-latitude ecosystems are exposed to more pronounced warming effects than other parts of the globe.We develop a technique to monitor ecological changes in a way that distinguishes climate influences from disturbanc... High-latitude ecosystems are exposed to more pronounced warming effects than other parts of the globe.We develop a technique to monitor ecological changes in a way that distinguishes climate influences from disturbances.In this study,we account for climatic influences on Alaskan boreal forest performance with a datadriven model.We defined ecosystem performance anomalies(EPA)using the residuals of the model and made annual maps of EPA.Most areas(88%)did not have anomalous ecosystem performance for at least 6 of 8 years between 1996 and 2004.Areas with underperforming EPA(10%)often indicate areas associated with recent fires and areas of possible insect infestation or drying soil related to permafrost degradation.Overperforming areas(2%)occurred in older fire recovery areas where increased deciduous vegetation components are expected.The EPA measure was validated with composite burn index data and Landsat vegetation indices near and within burned areas. 展开更多
关键词 climate change ANOMALY performance BOREAL Alaska Yukon River
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