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Lifetime of the B-c meson and some relevant problems
Chang, CH; Chen, SL; Feng, TF; Li, XQ; Chang, CH , CCAST, World Lab, POB 8730, Beijing 100080, Peoples R China.
2001
发表期刊PHYSICAL REVIEW D
ISSN0556-2821
卷号64期号:1页码:-
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.
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
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
学科领域Physics
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收录类别SCI
WOS记录号WOS:000169619300026
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被引频次:44[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/12713
专题理论物理所1978-2010年知识产出
通讯作者Chang, CH , CCAST, World Lab, POB 8730, Beijing 100080, Peoples R China.
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GB/T 7714
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):-.
APA Chang, CH,Chen, SL,Feng, TF,Li, XQ,&Chang, CH , CCAST, World Lab, POB 8730, Beijing 100080, Peoples R China..(2001).Lifetime of the B-c meson and some relevant problems.PHYSICAL REVIEW D,64(1),-.
MLA Chang, CH,et al."Lifetime of the B-c meson and some relevant problems".PHYSICAL REVIEW D 64.1(2001):-.
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