LHCb 实验的 Bc 研究的试验性的前景被讨论。在不同 center-of-mass 精力的 Bc 介子的生产率与奉献发电机 BCVEGPY 被估计。理论估计和 B+-c 的试验性的大小包括生产十字节在[?] s = 1.96 TeV 被比较。在 LHCb 实验在 Bc 腐烂学习 Bc ...LHCb 实验的 Bc 研究的试验性的前景被讨论。在不同 center-of-mass 精力的 Bc 介子的生产率与奉献发电机 BCVEGPY 被估计。理论估计和 B+-c 的试验性的大小包括生产十字节在[?] s = 1.96 TeV 被比较。在 LHCb 实验在 Bc 腐烂学习 Bc 生产， Bc 光谱学， Bc 腐烂和 CP 违背的可能性被评估。[从作者抽象]展开更多
We investigate the nature of the dark matter by proposing a mechanism for the breaking of local rotational symmetry between ordinary third family leptons and proposed non-regular leptons at energy scales below 10 TeV....We investigate the nature of the dark matter by proposing a mechanism for the breaking of local rotational symmetry between ordinary third family leptons and proposed non-regular leptons at energy scales below 10 TeV. This symmetry breaking mechanism involves electric charge swap between ordinary families of leptons can and produces highly massive non-regular leptons of order O(1 TeV) mass unobservable at energy scales below 10 TeV(the scale of LEP I, II and neutrino oscillation experiments). Electric charge swap between ordinary families of leptons produces heavy neutral non-regular leptons with order O(1 TeV) masses, which may form cold dark matter. The existence of these proposed leptons can be tested once the Large Hadron Collider(LHC) becomes operative at 10 TeV energy-scales. This proposition may have far reaching applications in astrophysics and cosmology.展开更多
The ground-based EAS array is usually operated with a high duty cycle (> 90%) and a large field of view (～ 2sr), which can continuously monitor the sky. It is essential and irreplaceable to understand the gamma-ra...The ground-based EAS array is usually operated with a high duty cycle (> 90%) and a large field of view (～ 2sr), which can continuously monitor the sky. It is essential and irreplaceable to understand the gamma-ray emission mechanism and intrinsic physics progress of the variable source AGN. The EAS arrays, AS-γ experiment (since 1990) and ARGO-YBJ experiment (since 2007), have continuously monitored the northern sky at energies above 3 TeV and 0.3 TeV, respectively. They have made substantial contributions for long-term monitoring of Mrk 421 and Mrk 501. In this paper, we will review the results obtained by the EAS arrays. The next generation of EAS array, LHAASO project, will boost the sensitivity of current EAS array at least up to 30 times with a much wider energy range from 40 GeV to 1 PeV. Beside increasing the number of VHE gamma-ray sources, it will guide us look sight into the properties of jet, and throw light on the determining of the EBL, intergalactic magnetic fields, and the validity of the Lorentz Invariance.展开更多
基金Supported in part by the National Natural Science Foundation of China under Grant Nos 10920101072 and 10775077, and the L＇Agence Nationale de la Recherche （ANR） of France under Contract ＂BcLHCb ANR-07-JCJC-0146＂, and the France-China Particle Physics Laboratory （FCPPL）.
文摘LHCb 实验的 Bc 研究的试验性的前景被讨论。在不同 center-of-mass 精力的 Bc 介子的生产率与奉献发电机 BCVEGPY 被估计。理论估计和 B+-c 的试验性的大小包括生产十字节在[?] s = 1.96 TeV 被比较。在 LHCb 实验在 Bc 腐烂学习 Bc 生产， Bc 光谱学， Bc 腐烂和 CP 违背的可能性被评估。[从作者抽象]
文摘We investigate the nature of the dark matter by proposing a mechanism for the breaking of local rotational symmetry between ordinary third family leptons and proposed non-regular leptons at energy scales below 10 TeV. This symmetry breaking mechanism involves electric charge swap between ordinary families of leptons can and produces highly massive non-regular leptons of order O(1 TeV) mass unobservable at energy scales below 10 TeV(the scale of LEP I, II and neutrino oscillation experiments). Electric charge swap between ordinary families of leptons produces heavy neutral non-regular leptons with order O(1 TeV) masses, which may form cold dark matter. The existence of these proposed leptons can be tested once the Large Hadron Collider(LHC) becomes operative at 10 TeV energy-scales. This proposition may have far reaching applications in astrophysics and cosmology.
基金the National Natural Science Foundation of China (Grant No. 11205165)the Xiejialin Fund of the Institute of High Energy Physics, Chinese Academy of Sciences (Grant No. Y3546140U2)
文摘The ground-based EAS array is usually operated with a high duty cycle (> 90%) and a large field of view (～ 2sr), which can continuously monitor the sky. It is essential and irreplaceable to understand the gamma-ray emission mechanism and intrinsic physics progress of the variable source AGN. The EAS arrays, AS-γ experiment (since 1990) and ARGO-YBJ experiment (since 2007), have continuously monitored the northern sky at energies above 3 TeV and 0.3 TeV, respectively. They have made substantial contributions for long-term monitoring of Mrk 421 and Mrk 501. In this paper, we will review the results obtained by the EAS arrays. The next generation of EAS array, LHAASO project, will boost the sensitivity of current EAS array at least up to 30 times with a much wider energy range from 40 GeV to 1 PeV. Beside increasing the number of VHE gamma-ray sources, it will guide us look sight into the properties of jet, and throw light on the determining of the EBL, intergalactic magnetic fields, and the validity of the Lorentz Invariance.
