Lifetime of the B-c meson and some relevant problems

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	Lifetime of the B-c meson and some relevant problems
	Feng, TF; Chang, CH , CCAST, World Lab, POB 8730, Beijing 100080, Peoples R China.; Li, XQ; Chang, CH; Chen, SL
刊名	PHYSICAL REVIEW D
	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
ISSN号	0556-2821
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.
学科主题	Physics
URL标识	查看原文
WOS记录号	WOS:000169619300026
公开日期	2012-08-29
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/12713]
专题	理论物理研究所_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.
推荐引用方式 GB/T 7714	Feng, TF,Chang, CH , CCAST, World Lab, POB 8730, Beijing 100080, Peoples R China.,Li, XQ,et al. Lifetime of the B-c meson and some relevant problems[J]. PHYSICAL REVIEW D,2001,64(1):-.
APA	Feng, TF,Chang, CH , CCAST, World Lab, POB 8730, Beijing 100080, Peoples R China.,Li, XQ,Chang, CH,&Chen, SL.(2001).Lifetime of the B-c meson and some relevant problems.PHYSICAL REVIEW D,64(1),-.
MLA	Feng, TF,et al."Lifetime of the B-c meson and some relevant problems".PHYSICAL REVIEW D 64.1(2001):-.