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What can we learn from B -> a(1)(1260)(b(1)(1235))pi(K) decays?
Wang W(王伟); Li RH(李润辉); Lv CD(吕才典); Wang, W; Li, RH; Lu, CD
2008
发表期刊PHYSICAL REVIEW D
卷号78期号:7页码:74009
通讯作者[Wang, Wei ; Li, Run-Hui ; Lue, Cai-Dian] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China ; [Li, Run-Hui] Shandong Univ, Dept Phys, Jinan 250100, Peoples R China ; [Lue, Cai-Dian] Chinese Acad Sci, Theoret Phys Ctr Sci Facil, Beijing 100049, Peoples R China
文章类型Article
摘要We investigate the B -> a(1)(1260)(b(1)(1235))pi(K) decays under the factorization scheme and find many discrepancies between theoretical predictions and the experimental data. In the tree-dominated processes, large contributions from color-suppressed tree diagrams are required in order to accommodate the large decay rates of B--> a(1)(0)pi(-) and B--> a(1)(-)pi(0). For (B)overbar(0)->(a(1)(+),b(1)(+))K- decays which are induced by b -> s transition, theoretical predictions on their decay rates are larger than the data by a factor of 2.8 and 5.5, respectively. Large electroweak penguins or some new mechanism are expected to explain the branching ratios of B--> b(1)(0)K(-) and B--> a(1)(-)(K)overbar(0). The soft-collinear effective theory has the potential to explain large decay rates of B--> a(1)(0)pi(-) and B--> a(1)(-)pi(0) via a large hard-scattering form factor zeta(B -> a)(J)(1). We will also show that, with proper charming penguins, predictions on the branching ratios of (B)overbar(0)->(a(1)(+),b(1)(+))K- can also be consistent with the data.
学科领域Astronomy & Astrophysics; Physics
研究领域[WOS]Astronomy & Astrophysics ; Physics ; Astronomy & Astrophysics ; Physics
DOI10.1103/PhysRevD.78.074009
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语种英语
研究领域[WOS]Astronomy & Astrophysics ; Physics ; Astronomy & Astrophysics ; Physics
WOS类目Astronomy & Astrophysics ; Physics, Particles & Fields
WOS记录号WOS:000260574800045
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被引频次:14[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/240775
专题理论物理室
作者单位中国科学院高能物理研究所
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Wang W,Li RH,Lv CD,et al. What can we learn from B -> a(1)(1260)(b(1)(1235))pi(K) decays?[J]. PHYSICAL REVIEW D,2008,78(7):74009.
APA 王伟,李润辉,吕才典,Wang, W,Li, RH,&Lu, CD.(2008).What can we learn from B -> a(1)(1260)(b(1)(1235))pi(K) decays?.PHYSICAL REVIEW D,78(7),74009.
MLA 王伟,et al."What can we learn from B -> a(1)(1260)(b(1)(1235))pi(K) decays?".PHYSICAL REVIEW D 78.7(2008):74009.
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