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:23
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
摘要
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.
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.
基金
Supported by CERN and national agencies:CAPES,CNPq,FAPERJ and FINEP(Brazil)
NSFC(China)
CNRS/IN2P3(France)
BMBF,DFG,HGF and MPG(Germany)
INFN(Italy)
FOM and NWO(The Netherlands)
MNi SW and NCN(Poland)
MEN/IFA(Romania)
Min ES and FANO(Russia)
Min ECo(Spain)
SNSF and SER(Switzerland)
NASU(Ukraine)
STFC(United Kingdom)
NSF(USA)
supported by IN2P3(France),KIT and BMBF(Germany),INFN(Italy),NWO
SURF(The Netherlands),PIC(Spain),Grid PP(United Kingdom)
support from EPLANET,Marie Sk lodowska-Curie Actions
ERC(European Union),Conseil général de Haute-Savoie,Labex ENIGMASS and OCEVU,Région
Auvergne(France),RFBR(Russia),Xunta Gal
GENCAT(Spain),Royal Society and Royal Commission for the Exhibition of 1851(United Kingdom)
参考文献51
-
1S. H. Lee et al, Phys. Rev. Lett., 100:222301 (2008).
-
2Y. Oh, C. M. Ko, S. H. Lee, and S. Yasui, Phys. Rev. C, 79: 044905 (2009).
-
3W. S. Lockman et al, Phys. Lett. B, 85:443 (1979).
-
4P. Chauvat et al (R608 Collaboration), Phys. Lett. B, 199:304 (1987).
-
5S. Chatrchyan et al (CMS Collaboration), Phys. Lett. B, 714: 136 (2012).
-
6J. L. Rosner, Phys. Rev. D, 90:014023 (2014).
-
7R. Aaij et al (LHCb Collaboration), Phys. Rev. D, 85:032008 (2012).
-
8R. Aaij et al (LHCb Collaboration), JHEP, 08:143 (2014).
-
9R. Aaij et al (LHCb Collaboration 102003 (2013).
-
10R. Aaij et al (LHCb Collaboration 072001 (2015).
同被引文献91
-
1Yanfu Chai,Chao He,Bin Jiang,Jie Fu,Zhongtao Jiang,Qingshan Yang,Haoran Sheng,Guangsheng Huang,Dingfei Zhang,Fusheng Pan.Influence of minor Ce additions on the microstructure and mechanical properties of Mg-1.0Sn-0.6Ca alloy[J].Journal of Materials Science & Technology,2020(2):26-37. 被引量:11
-
2贾小丽,张平,马涛,王莉.壳聚糖涂膜对冬枣室温条件下生理生化的影响[J].保鲜与加工,2006,6(1):25-27. 被引量:14
-
3Xue-Hua Chen,Bin Lan,Ying Qu,xiao-Qing Zhang,Qu Cai,Bing-Ya Liu,Zheng-Gang Zhu.Inhibitory effect of Polo-like kinase 1 depletion on mitosis and apoptosis of gastric cancer cells[J].World Journal of Gastroenterology,2006,12(1):29-35. 被引量:10
-
4陈昆亭,龚六堂.粘滞价格模型以及对中国经济的数值模拟——对基本RBC模型的改进[J].数量经济技术经济研究,2006,23(8):106-117. 被引量:151
-
5Leading Group of the Second China National Sample Survey on Disability, National Bureau of Statistics of the People’s Republic of China.2006年第二次全国残疾人抽样调查主要数据公报[J].中国康复理论与实践,2006,12(12):1013-1013. 被引量:155
-
6郭小艳,王振宏.积极情绪的概念、功能与意义[J].心理科学进展,2007,15(5):810-815. 被引量:295
-
7方来坛,时勘,张风华.中文版学习投入量表的信效度研究[J].中国临床心理学杂志,2008,16(6):618-620. 被引量:453
-
8任玉锋,任贤,雷茜.灵武长枣采后生理及贮藏保鲜技术研究进展[J].河北农业科学,2009,13(1):13-15. 被引量:11
-
9王亮,赵迎丽,闫根柱,李建华,王春生.气调贮藏对冬枣品质的影响[J].保鲜与加工,2009,9(2):40-44. 被引量:9
-
10解亚宁.简易应对方式量表信度和效度的初步研究[J].中国临床心理学杂志,1998,6(2):114-115. 被引量:1668
引证文献23
-
1张文浩,刘冉,黄一宁.脑淀粉样血管病相关炎症研究进展[J].中国现代神经疾病杂志,2020(9):760-765. 被引量:2
-
2唐小涵,刘世家,刘喜,田云录,王云龙,滕烜,段二超,张元燕,江玲,张文伟,王益华,万建民.色氨酰-tRNA合成酶基因WRS1调控水稻种子发育[J].中国水稻科学,2020,34(5):383-396. 被引量:1
-
3任琴,杜寿文,吕孔鹏,张星艳,戴少波,李体远,田明尧,吴诗品,李昌.寨卡病毒及其与宿主蛋白相互作用研究进展[J].病毒学报,2020,36(6):1201-1207. 被引量:1
-
4陈子豪,唐自闽,郑子峥,夏宁邵.抗原检测在戊型肝炎临床诊断中的应用[J].病毒学报,2021,37(1):234-242. 被引量:5
-
5王培刚,高娜,范东瀛,安静.寨卡病毒,不仅仅是小头畸形[J].病毒学报,2021,37(1):243-251. 被引量:1
-
6罗政,耿子坚,陈飞平,王玲,张惠娜,陈于陇.不同气调包装对鲜食冬枣保鲜效果的比较[J].广东农业科学,2021,48(3):151-159. 被引量:15
-
7马理,范伟.应对疫情冲击的货币政策调控机制研究[J].经济科学,2021(2):19-32. 被引量:13
-
8付永娟,卢德宏,魏宇魁,樊晓彤,矫黎东,朴月善.以脑白质受累为主的中枢神经系统弥漫性和多发性病变临床病理学特点分析[J].中国现代神经疾病杂志,2021,21(4):262-271. 被引量:3
-
9夏雨,吴量,姚文辉,郝蒙,陈晶,张诚,吴涛,谢治辉,宋江凤,蒋斌,麻彦龙,潘复生.Mg−Ca合金表面的原位层状双氢氧化物:Ca在镁合金中的作用[J].Transactions of Nonferrous Metals Society of China,2021,31(6):1612-1627. 被引量:2
-
10陈晶,赵冬静,王颜刚.饥饿素在糖代谢中的作用以及在糖尿病中的研究综述[J].临床医学进展,2021,11(3):1147-1153. 被引量:1
二级引证文献48
-
1陈磊,郑建伟,党印.有为政府、财政分权与央地财政支出效果分析——基于新结构经济学的视角[J].制度经济学研究,2023(3):35-67.
-
2宋洛卿,周国钰,叶翔,卢梅,赵新静.脑淀粉样血管病相关炎症长期误诊1例报道并文献复习[J].山东大学学报(医学版),2022,60(4):119-122. 被引量:1
-
3马晓薇,甄若楠,肖新才,谢朝军,王志伟,许杨,张颖.广州市寨卡疫区来穗人员病毒携带情况及传播风险研究[J].医学动物防制,2021,37(6):544-547. 被引量:1
-
4宗自豪,戚军洋,杨光辉,蔡海燕,吴伟杰,韩延超,陈杭君,郜海燕.杨梅产地保鲜处理与新型贮运包装的研究及应用[J].保鲜与加工,2021,21(8):120-125. 被引量:4
-
5朴月善,付永娟,卢德宏.精准医疗时代神经病理诊断的挑战与实践[J].中华病理学杂志,2021,50(8):848-851. 被引量:2
-
6潘敏,易宇寰.双循环视角下美联储预期加息对中国经济的溢出效应及其应对措施研究[J].金融经济,2021(8):3-16. 被引量:2
-
7秦怡.浅谈湿源特性对密闭储仓空间湿度分布的影响[J].物流工程与管理,2021,43(10):54-55.
-
8董晓林,张晔,徐虹.金融科技发展能够帮助小微企业度过危机吗?——基于新冠肺炎疫情的准自然实验[J].经济科学,2021(6):73-87. 被引量:20
-
9郭娇菡(综述),徐建青(审校).寨卡病毒感染的辅助性宿主因子研究进展[J].复旦学报(医学版),2022,49(1):144-148.
-
10尹韦琪.货币政策对产业发展的非对称性效应分析[J].财经科学,2022(1):31-42. 被引量:1
-
1M.N.Achasov,K.I.Beloborodov,A.V.Berdyugin,A.A.Botov,V.B.Golubev,T.V.Dimova,V.P.Druzhinin,L.V.Kardapoltsev,A.G.Kharlamov,D.P.Kovrizhin,I.A.Koop,A.A.Korol,S.V.Koshuba,A.E.Obrazovsky,E.V.Pakhtusova,D.A.Shtol,S.I.Serednyakov,Z.K.Silagadze,A.N.Skrinsky,Yu.A.Tikhonov,Yu.M.Shatunov,A.V.Vasil'ev.Study of the process e^+e^- →π^+π^-π~0π~0 at energies s~(1/2)<1 GeV[J].Chinese Physics C,2010,34(6):680-685.
-
2邹冰松.Complementary studies on N* from e^+e^-, pp and p collisions[J].Chinese Physics C,2009,33(12):1113-1119.
-
3苑长征,莫晓虎,王平.Branching fraction of the isospin violating process φ→ωπ^0[J].Chinese Physics C,2011,35(6):543-544.
-
4沈朝晖,王晶,马延钧.用迈克尔逊干涉仪测量单层薄膜的厚度和折射率[J].大学物理实验,1994,7(1):1-3. 被引量:10
-
5O. Biebel,D. de Florian,D. Milstead,A. Vogt.FRAGMENTATION FUNCTIONS IN e+e-, ep AND pp COLLISIONS[J].Chinese Physics C,2016,40(10):337-348.
-
6刘汇慧,张晓菲,陈江川.Direct Measurement of Branching Fraction for Inclusive Semimuonic Decay of Neutral D Mesons[J].Chinese Physics Letters,2009,26(6):84-86.
-
7谷晋骐,韩丽英.薄膜参数测定新方法[J].仪器仪表学报,1996,17(3):285-289.
-
8麦迪娜,M.N.Achasov,艾小聪,O.Albayrak,M.Albrecht,D.J.Ambrose,A.Amoroso,安芬芬,安琪,白景芝,R.Baldini Ferroli,班勇,D.W.Bennett,J.V.Bennett,M.Bertani,D.Bettoni,边渐鸣,F.Bianchi,E.Boger,I.Boyko,R.A.Briere,蔡浩,蔡啸,O.Cakir,A.Calcaterra,曹国富,S.A.Cetin,常劲帆,G.Chelkov,陈刚,陈和生,陈海云,陈江川,陈玛丽,陈实,陈申见,谌炫,陈旭荣,陈元柏,程和平,褚新坤,G.Cibinetto,代洪亮,代建平,A.Dbeyssi,D.Dedovieh,邓子艳,A.Denig,I.Denysenko,M.Destefanis,F.De Mori,丁勇,董超,董静,董燎原,董明义,豆正磊,杜书先,段鹏飞,范荆州,方建,房双世,方馨,方易,R.Farinelli,L.Fava,O.Fedorov,F.Feldbauer,G.Felici,封常青,E.Fioravanti,M.Fritsch,傅成栋,高清,高鑫磊,高旭阳,高原宁,高榛,I.Garzia,K.Goetzen,龚丽,龚文煊,W.Gradl,M.Greco,顾旻皓,顾运厅,管颖慧,郭爱强,郭立波,郭如盼,郭玥,郭玉萍,Z.Haddadi,A.Hafner,韩爽,郝喜庆,F.A.Harris,何康林,T.Held,衡月昆,侯治龙,胡琛,胡海明,胡继峰,胡涛,胡誉,黄光顺,黄金书,黄性涛,黄晓忠,黄勇,黄智玲,T.Hussain,纪全,姬清平,季晓斌,季筱璐,姜鲁文,江晓山,蒋兴雨,焦健斌,焦铮,金大鹏,金山,T.Johansson,A.Julin,N.Kalantar-Nayestanaki,康晓琳,康晓珅,M.Kavatsyuk,柯百谦,P.Kiese,R.Kliemt,B.Kloss,O.B.Kolcu,B.Kopf,M.Kornicer,A.Kupsc,W.Kühn,J.S.Lange,M.Lara,P.Larin,C.Leng,李翠,李澄,李德民,李飞,李峰云,李刚,李海波,李惠静,李家才,李瑾,李康,李科,李蕾,李培荣,李启云,李腾,李卫东,李卫国,李晓玲,李小男,李学潜,李郁博,李志兵,梁昊,梁勇飞,梁羽铁,廖广睿,林德旭,刘冰,刘北江,刘春秀,刘栋,刘福虎,刘芳,刘峰,刘宏邦,刘汇慧,刘欢欢,刘怀民,刘杰,刘建北,刘觉平,刘晶译,刘凯,刘魁勇,刘兰雕,刘佩莲,刘倩,刘树彬,刘翔,刘玉斌,刘振安,刘智青,H.Loehner,娄辛丑,吕海江,吕军光,卢宇,卢云鹏,罗成林,罗民兴,T.Luo,罗小兰,吕晓睿,马凤才,马海龙,马连良,马明明,马秋梅,马天,马旭宁,马骁妍,马玉明,F.E.Maas,M.Maggiora,冒亚军,毛泽普,S.Marcello,J.G.Messchendorp,闵建,闵天觉,R.E.Mitchell,莫晓虎,莫玉俊,C.Morales Morales,N.Yu.Muchnoi,H.Muramatsu,Y.Nefedov,F.Nerling,I.B.Nikolaev,宁哲,S.Nisar,牛顺利,牛讯伊,馬鵬,欧阳群,S.Pacetti,潘越,P.Patteri,M.Pelizaeus,彭海平,K.Peters,J.Pettersson,平加伦,平荣刚,R.Poling,V.Prasad,漆红荣,祁鸣,钱森,乔从丰,秦丽清,覃拈,秦小帅,秦中华,邱进发,K.H.Rashid,C.F.Redmer,M.Ripka,荣刚,Ch.Rosner,阮向东,A.Sarantsev,M.Savrie,K.Schoenning,S.Schumann,单葳,邵明,沈成平,沈培迅,沈肖雁,盛华义,施萌,宋维民,宋欣颖,S.Sosio,S.Spataro,孙功星,孙俊峰,孙胜森,孙新华,孙勇杰,孙永昭,孙志嘉,孙振田,唐昌建,唐晓,I.Tapan,E.H.Thorndike,M.Tiemens,M.Ullrich,I.Uman,G.S.Yarner,王斌,王滨龙,王东,王大勇,王科,王亮亮,王灵淑,王萌,王平,王佩良,王炜,王维平,王雄飞,王越,王雅迪,王贻芳,王亚乾,王铮,王志刚,王志宏,王至勇,王宗源,T.Weber,魏代会,P.Weidenkaff,文硕频,U.Wiedner,M.Wolke,伍灵慧,吴连近,吴智,夏磊,夏力钢,夏宇,肖栋,肖浩,肖振军,谢宇广,修青磊,许国发,徐静静,徐雷,徐庆君,徐庆年,徐新平,严亮,鄢文标,闫文成,颜永红,杨海军,杨洪勋,杨柳,杨永栩,叶梅,叶铭汉,殷俊昊,俞伯祥,喻纯旭,俞洁晟,苑长征,袁文龙,袁野,A.Yuncu,A.A.Zafar,A.Zallo,曾云,曾哲,张丙新,张炳云,张驰,张长春,张达华,张宏浩,章红宇,张晋,张佳佳,张杰磊,张敬庆,张家文,张建勇,张景芝,张坤,张磊,张士权,张学尧,张瑶,张银鸿,张宇宁,张亚腾,张宇,张正好,张子平,张振宇,赵光,赵京伟,赵静宜,赵京周,赵雷,赵玲,赵明刚,赵强,赵庆旺,赵书俊,赵天池,赵豫斌,赵政国,A.Zhemchugov,郑波,郑建平,郑文静,郑阳恒,钟彬,周莉,周详,周晓康,周小蓉,周兴玉,朱凯,朱科军,朱帅,朱世海,朱相雷,朱莹春,朱永生,朱自安,庄建,L.Zotti,邹冰松,邹佳恒.Measurement of the absolute branching fraction of D^+→K^0e^+v_e via K^0→π~0π~0[J].Chinese Physics C,2016,40(11):5-13. 被引量:1
-
9朱佳庆,江学敏,李云德.J/ψ Production in Ultra-Peripheral pp Collisions through aTwo-Photon Process[J].Chinese Physics Letters,2014,31(11):35-38.
-
10阿布里克木·麦迪娜,白景芝,白羽,班勇,蔡啸,陈宏芳,陈和生,陈江川,陈进,陈元柏,初元萍,戴又善,邓子艳,杜书先,方建,傅成栋,高原宁,顾运厅,郭子敬,何康林,何瑁,衡月昆,胡海明,胡涛,黄光顺,黄性涛,黄燕萍,季晓斌,江晓山,焦健斌,金大鹏,金山,李刚,李海波,李金,李蕾,李仁英,李卫东,李卫国,李晓玲,李小男,李学潜,梁勇飞,刘北江,刘春秀,刘芳,刘峰,刘宏邦,刘怀民,刘觉平,刘倩,刘荣光,刘振安,吕峰,鲁公儒,吕军光,罗成林,马凤才,马海龙,马秋梅,毛泽普,莫晓虎,聂晶,平荣刚,邱进发,荣刚,阮向东,单连友,尚雷,沈成平,沈肖雁,盛华义,孙海生,孙胜森,孙永昭,孙志嘉,唐晓,田俊平,万霞,王岚,王亮亮,王灵淑,王平,王佩良,王贻芳,王铮,王至勇,魏诚林,魏代会,吴宁,许国发,徐新平,徐晔,阎沐霖,杨洪勋,杨明,杨永栩,叶铭汉,叶云秀,喻纯旭,苑长征,袁野,曾云,张丙新,张炳云,张长春,张达华,张华桥,章红宇,张家文,张建勇,张学尧,张一云,张子平,赵京伟,赵明刚,赵平平,赵政国,郑波,郑海青,郑建平,郑志鹏,钟彬,周莉,朱科军,朱启明,朱兴旺,朱永生,朱自安,邹冰松.baryonic decays branching fraction alpha distribution[J].Chinese Physics C,2012,36(11):1040-1045.