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题名: Charmless B-(s) -> VV decays in factorization-assisted topological-amplitude approach
作者: Wang, C ;  Zhang, QA ;  Li, Y ;  Lu, CD
刊名: EUROPEAN PHYSICAL JOURNAL C
出版日期: 2017
卷号: 77, 期号:5, 页码:333
学科分类: Physics
DOI: http://dx.doi.org/10.1140/epjc/s10052-017-4889-3
通讯作者: Li, Y (reprint author), Yantai Univ, Dept Phys, Yantai 264005, Peoples R China. ;  Li, Y (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
文章类型: Article
英文摘要: Within the factorization-assisted topological-amplitude approach, we studied the 33 charmless B-(s) -> VV decays, where V stands for a light vector meson. According to the flavor flows, the amplitude of each process can be decomposed into eight different topologies. In contrast to the conventional flavor diagrammatic approach, we further factorize each topological amplitude into decay constant, form factors and unknown universal parameters. By chi(2) fitting 46 experimental observables, we extracted 10 theoretical parameters with chi(2) per degree of freedom around 2. Using the fitted parameters, we calculated the branching fractions, polarization fractions, CP asymmetries and relative phases between polarization amplitudes of each decay mode. The decay channels dominated by tree diagram have large branching fractions and large longitudinal polarization fraction. The branching fractions and longitudinal polarization fractions of color-suppressed decays become smaller. Current experimental data of large transverse polarization fractions in the penguin dominant decay channels can be explained by only one transverse amplitude of penguin annihilation diagram. Our predictions of the not yet measured channels can be tested in the ongoing LHCb experiment and the Belle-II experiment in the future.
类目[WOS]: Physics, Particles & Fields
关键词[WOS]: COLLINEAR EFFECTIVE THEORY ;  B-MESONS ;  QCD FACTORIZATION ;  QUARK ;  POLARIZATION
项目资助者: National Natural Science Foundation of China [11575151, 11375208, 11521505, 11621131001, 11235005] ;  Program for New Century Excellent Talents in University (NCET) by Ministry of Education of P. R. China [NCET-13-0991] ;  Open Project Program of State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, China [Y5KF111CJ1] ;  Natural Science Foundation of Shandong Province [ZR2016JL001]
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/22053
Appears in Collections:理论物理所2017年知识产出_期刊论文

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Recommended Citation:
Wang, C,Zhang, QA,Li, Y,et al. Charmless B-(s) -> VV decays in factorization-assisted topological-amplitude approach[J]. EUROPEAN PHYSICAL JOURNAL C,2017,77(5):333.
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