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题名: Lifetime of the B-c meson and some relevant problems
作者: Chang, CH ;  Chen, SL ;  Feng, TF ;  Li, XQ
刊名: PHYSICAL REVIEW D
出版日期: 2001
卷号: 64, 期号:1, 页码:-
关键词: SEMILEPTONIC BRANCHING RATIO ;  INCLUSIVE WEAK DECAYS ;  QCD SUM-RULES ;  PHENOMENOLOGICAL ANALYSIS ;  P(P)OVER-BAR COLLISIONS ;  ROOT-S=1.8 TEV ;  BEAUTY ;  SPECTROSCOPY ;  MODEL ;  ORDER
学科分类: Physics
通讯作者: Chang, CH , CCAST, World Lab, POB 8730, Beijing 100080, Peoples R China.
部门归属: CCAST, World Lab, Beijing 100080, Peoples R China; Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China; Nankai Univ, Dept Phys, Tianjin 300071, Peoples R China
英文摘要: The lifetime of the B-c meson is estimated by means of consistent considerations of all of the heavy mesons (B-0,B+/-,B-s,D-0,D',D-s) and the double heavy meson B-c itself as well. The framework, where the nonspectator effects for inclusive decays in terms of the optical theorem are taken into account properly, is adopted, and the parameters appearing in the estimate are treated phenomenologically by global fitting all the existing data for all the heavy mesons. In this estimation, special attention is paid to the masses of the heavy flavors and the bound-state effects as well. The present approach to the problem is meaningful because the numerical results show that the lifetime of the meson B-c can reach to the center value of the experimental observation. Because of the interference between the terms of the QCD correction from penguin diagrams and the main ones c(1)O(1), c(2)O(2), the total width of the meson B-c is enhanced by a factor about 3-4% that is different from the other heavy mesons and can be tested experimentally in the future.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000169619300026
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/12713
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Chang, CH,Chen, SL,Feng, TF,et al. Lifetime of the B-c meson and some relevant problems[J]. PHYSICAL REVIEW D,2001,64(1):-.
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