Exclusive radiative B-meson decays within minimal flavor-violating two-Higgs-doublet models

CORC > 理论物理研究所 > 中国科学院理论物理研究所 > 理论物理所科研产出 > 理论物理所1978-2010年知识产出

	Exclusive radiative B-meson decays within minimal flavor-violating two-Higgs-doublet models
	Li, XQ; Yang, YD; Yuan, XB
刊名	PHYSICAL REVIEW D
	2014
卷号	89 期号:5 页码:54024
关键词	TO-LEADING ORDER K-ASTERISK-GAMMA STANDARD MODEL QCD CORRECTIONS CP-VIOLATION BRANCHING RATIOS PENGUIN DECAYS ATLAS DETECTOR HIGGS-BOSON CKM MATRIX
ISSN号	1550-7998
通讯作者	Li, XQ (reprint author), Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Hubei, Peoples R China.
英文摘要	In the "Higgs basis" for a generic two-Higgs-doublet model, only one doublet gets a nonzero vacuum expectation value and, under the criterion of minimal flavor violation, the other one is fixed to be either color-singlet or color-octet, referred to, respectively, as the type-III and type-C models. Both of them can naturally avoid large FCNC transitions and provide very interesting phenomena in some low-energy processes. In this paper, we study their effects on exclusive radiative B-meson decays due to the exchange of colorless or colored charged Higgs. It is found that while constraints from the branching ratios are slightly weaker than the ones from the inclusive B -> X-s gamma decay, the isospin asymmetries in exclusive decays provide very complementary bounds on the model parameters. As the two models predict similar corrections to the dipole coefficient C-7(eff), but similar magnitudes with opposite signs to C-8(eff), the branching ratios cannot discriminate the two models, and we have to resort to the direct CP and isospin asymmetries of b -> s processes, which are more sensitive to C-8(eff). Due to the CKM factors vertical bar lambda((d))(u)vertical bar similar to vertical bar lambda((d))(t)vertical bar, the terms proportional to lambda((d))(u) make the observables of b -> d processes exhibit a different dependence on the possible new physics phase. In addition, correlations between the various observables in the exclusive B -> V gamma and the inclusive B -> X-s,X-d gamma decays are investigated, which could provide further insights into the models with more precise experimental measurements and theoretical predictions for these decays.
学科主题	Physics
收录类别	SCI
资助信息	National Natural Science Foundation of China (NSFC) [11005032, 11075059, 11225523, 11221504]; Specialized Research Fund for the Doctoral Program of Higher Education of China [20104104120001]; Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry; CCNU-QLPL Innovation Fund [QLPL2011P01]; Central China Normal University
原文出处	http://dx.doi.org/10.1103/PhysRevD.89.054024
语种	英语
WOS记录号	WOS:000334304000001
公开日期	2015-06-03
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/15805]
专题	理论物理研究所_理论物理所1978-2010年知识产出
推荐引用方式 GB/T 7714	Li, XQ,Yang, YD,Yuan, XB. Exclusive radiative B-meson decays within minimal flavor-violating two-Higgs-doublet models[J]. PHYSICAL REVIEW D,2014,89(5):54024.
APA	Li, XQ,Yang, YD,&Yuan, XB.(2014).Exclusive radiative B-meson decays within minimal flavor-violating two-Higgs-doublet models.PHYSICAL REVIEW D,89(5),54024.
MLA	Li, XQ,et al."Exclusive radiative B-meson decays within minimal flavor-violating two-Higgs-doublet models".PHYSICAL REVIEW D 89.5(2014):54024.