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Extraction of alpha from the CP asymmetry in B-0/(B)over-bar(0)->pi(+)pi(-) decays
Kramer, G; Palmer, WF; Wu, YL; Kramer, G , UNIV HAMBURG,INST THEORET PHYS 2,LURUPER CHAUSSEE 149,D-22761 HAMBURG,GERMANY.
1997
发表期刊COMMUNICATIONS IN THEORETICAL PHYSICS
ISSN0253-6102
卷号27期号:4页码:457-464
摘要The influence of strong and electroweak penguin amplitudes in B/(B) over bar --> pi(+)pi(-) is investigated in connection with the determination of the unitarity triangle angle a of the CKM matrix. A relation between the observable asymmetry, the angle alpha, and the penguin amplitude is established. A model calculation of the penguin amplitude shows that the CP asymmetry in B-0 --> pi(+)pi(-) decays is only mildly influenced by the penguin amplitudes. Experimental limits on pure penguin and penguin dominated processes are consistent with the model. This information also suggests in a rather model-independent way that penguin amplitudes will not be a serious complicating factor in the determination of a from the pi(+)pi(-) time-dependent asymmetry.
部门归属OHIO STATE UNIV,DEPT PHYS,COLUMBUS,OH 43210; ACAD SINICA,INST THEORET PHYS,BEIJING 100080,PEOPLES R CHINA
关键词Penguin Diagrams
学科领域Physics
收录类别SCI
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/12465
专题理论物理所1978-2010年知识产出
通讯作者Kramer, G , UNIV HAMBURG,INST THEORET PHYS 2,LURUPER CHAUSSEE 149,D-22761 HAMBURG,GERMANY.
推荐引用方式
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Kramer, G,Palmer, WF,Wu, YL,et al. Extraction of alpha from the CP asymmetry in B-0/(B)over-bar(0)->pi(+)pi(-) decays[J]. COMMUNICATIONS IN THEORETICAL PHYSICS,1997,27(4):457-464.
APA Kramer, G,Palmer, WF,Wu, YL,&Kramer, G , UNIV HAMBURG,INST THEORET PHYS 2,LURUPER CHAUSSEE 149,D-22761 HAMBURG,GERMANY..(1997).Extraction of alpha from the CP asymmetry in B-0/(B)over-bar(0)->pi(+)pi(-) decays.COMMUNICATIONS IN THEORETICAL PHYSICS,27(4),457-464.
MLA Kramer, G,et al."Extraction of alpha from the CP asymmetry in B-0/(B)over-bar(0)->pi(+)pi(-) decays".COMMUNICATIONS IN THEORETICAL PHYSICS 27.4(1997):457-464.
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