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题名: Constraining the UT angle gamma by CP violation parameters in B-0 -> pi(+)pi(-)
作者: Qin, Q ;  Zou, ZT ;  Li, Y ;  Lu, CD
刊名: CHINESE PHYSICS C
出版日期: 2016
卷号: 40, 期号:3, 页码:31001
关键词: CP violation ;  gamma extraction ;  B meson decay
学科分类: Physics
DOI: http://dx.doi.org/10.1088/1674-1137/40/3/031001
通讯作者: Qin, Q (reprint author), Inst High Energy Phys, Beijing 100049, Peoples R China.
文章类型: Article
英文摘要: We calculate the tree and penguin amplitudes in the B-0 -> pi(+)pi(-) decay channel employing the perturbative QCD factorization approach. Using the amplitudes as input with the theoretical uncertainties sufficiently considered, we constrain the UT angle gamma to 53 degrees <= gamma <= 70 degrees, from the measurements of the CP violation parameters C pi+pi- and S pi+pi- in B-0 -> pi(+)pi(-). The U-spin breaking effect between B-0 -> pi(+)pi(-) and B-s(0) -> K+K- is estimated to be around 30%.
类目[WOS]: Physics, Nuclear ;  Physics, Particles & Fields
关键词[WOS]: HEAVY MESON DECAYS ;  PERTURBATIVE QCD ;  B-S ;  FACTORIZATION
收录类别: SCI
项目资助者: National Science Foundation of China [11175151, 11235005, 11375208, 11447032, 11575151] ;  Natural Science Foundation of Shandong Province [ZR2014AQ013] ;  Program for New Century Excellent Talents in University (NCET) by Ministry of Education of P.R. China [NCET-13-0991]
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/21745
Appears in Collections:理论物理所2016年知识产出_期刊论文

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Recommended Citation:
Qin, Q,Zou, ZT,Li, Y,et al. Constraining the UT angle gamma by CP violation parameters in B-0 -> pi(+)pi(-)[J]. CHINESE PHYSICS C,2016,40(3):31001.
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