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(Beta)over-bar(0)->pi X+ in the standard model
He, XG; Kao, CP; Ma, JP; Pakvasa, S; He, XG , Natl Taiwan Univ, Dept Phys, Taipei 10764, Taiwan.
2002
发表期刊PHYSICAL REVIEW D
ISSN0556-2821
卷号66期号:9页码:-
摘要We investigate the possibility of studying the B-->pi form factor using the semi-inclusive decays (B) over bar (0)-->pi(+)+X-q. In general, B-->PX semi-inclusive decays involve several hadronic parameters. However, for (B) over bar (0)-->pi(+)X(q) decays, we find that in the factorization approximation, the only unknown hadronic parameters are the form factors F-0,1(B-->pi). Therefore, these form factors can be studied in (B) over bar (0)-->pi(+)X(q) decays. Using theoretical model calculations for the form factors, the branching ratios for (B) over bar (0)-->pi(+)X(d)(DeltaS=0) and (B) over bar (0)-->pi(+)X(s)(DeltaS=-1), with E-pi>2.1 GeV, are estimated to be in the ranges of (3.1-4.9)x10(-5)[F-1(B-->pi)(0)/0.33](2) and (2.5-4.2)x10(-5)[F-1(B-->pi)(0)/0.33](2), respectively, depending on the value of the CP-violating phase gamma. The combined branching ratio for (B) over bar (0)-->pi(+)(X-d+X-s) is about 7.4x10(-5)[F(1)(B-->)pi(0)/0.33](2) and is insensitive to gamma. We also discuss CP asymmetries in these decay modes.
部门归属Natl Taiwan Univ, Dept Phys, Taipei 10764, Taiwan; Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China; Univ Hawaii, Dept Phys & Astron, Honolulu, HI 96822 USA
关键词Improved Factorization Approach Direct Cp Violation Hadronic B-decays Heavy-quark Limit Weak Phase-gamma B->k-pi Decays Qcd Factorization Perturbative Qcd Electroweak Penguins Branching Ratio
学科领域Physics
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收录类别SCI
WOS记录号WOS:000179679400075
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被引频次:5[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/311006/13409
专题理论物理所SCI论文
通讯作者He, XG , Natl Taiwan Univ, Dept Phys, Taipei 10764, Taiwan.
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He, XG,Kao, CP,Ma, JP,et al. (Beta)over-bar(0)->pi X+ in the standard model[J]. PHYSICAL REVIEW D,2002,66(9):-.
APA He, XG,Kao, CP,Ma, JP,Pakvasa, S,&He, XG , Natl Taiwan Univ, Dept Phys, Taipei 10764, Taiwan..(2002).(Beta)over-bar(0)->pi X+ in the standard model.PHYSICAL REVIEW D,66(9),-.
MLA He, XG,et al."(Beta)over-bar(0)->pi X+ in the standard model".PHYSICAL REVIEW D 66.9(2002):-.
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