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题名: Relativistic corrections to the exclusive decays of C-even bottomonia into S-wave charmonium pairs
作者: Sang, WL ;  Rashidin, R ;  Kim, UR ;  Lee, J
刊名: PHYSICAL REVIEW D
出版日期: 2011
卷号: 84, 期号:7, 页码:74026
关键词: TO-LEADING-ORDER ;  ROOT-S=10.6 GEV ;  ANNIHILATION ;  QCD
学科分类: Physics
通讯作者: Sang, WL (reprint author), Korea Univ, Dept Phys, Seoul 136701, South Korea.
部门归属: [Sang, Wen-Long; Kim, U-Rae; Lee, Jungil] Korea Univ, Dept Phys, Seoul 136701, South Korea; [Rashidin, Reyima] Chinese Acad Sci, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, Beijing 100190, Peoples R China; [Rashidin, Reyima] Xinjiang Univ, Sch Phys Sci & Technol, Urumqi 830046, Peoples R China; [Lee, Jungil] KISTI, Taejon 305806, South Korea
英文摘要: Within the nonrelativistic quantum chromodynamics (NRQCD) factorization formalism, we compute the relativistic corrections to the exclusive decays of bottomonia with even charge conjugation parity into S-wave charmonium pairs at leading order in the strong coupling constant. Relativistic corrections are resummed for a class of color-singlet contributions to all orders in the charm-quark velocity v(c) in the charmonium rest frame. Almost every process that we consider in this work has negative relativistic corrections ranging from -20 to -35%. Among the various processes, the relativistic corrections of the next-to-leading order in v(c) to the decay rate for chi(b2) -> eta(c)(mS) + eta(c)(nS) with m, n = 1 or 2 are very large. In every case, the resummation of the relativistic corrections enhances the rate in comparison with the next-to-leading-order results. We compare our results with available predictions based on the NRQCD factorization formalism. The NRQCD predictions are significantly smaller than those based on the light-cone formalism by 1 or 2 orders of magnitude.
资助者: NRF of Korea; MEST [2010-0028228]; Korea University; National Natural Science Foundation of China [10875130, 10935012]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000296882400003
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/14252
Appears in Collections:理论物理所2011年知识产出_期刊论文

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Recommended Citation:
Sang, WL,Rashidin, R,Kim, UR,et al. Relativistic corrections to the exclusive decays of C-even bottomonia into S-wave charmonium pairs[J]. PHYSICAL REVIEW D,2011,84(7):74026.
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