Heavy-to-light currents at NNLO in SCET and semi-inclusive (B)over-bar -> X(s)l(+)l(-) decay

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	Heavy-to-light currents at NNLO in SCET and semi-inclusive (B)over-bar -> X(s)l(+)l(-) decay
	Bell, G ; Beneke, M ; Huber, T ; Li, XQ
刊名	NUCLEAR PHYSICS B
	2011
卷号	843 期号:1 页码:143-176
关键词	COLLINEAR EFFECTIVE THEORY MESON FORM-FACTORS B DECAYS VERTEX CORRECTIONS QCD FACTORIZATION STANDARD MODEL PHOTON ENERGY 2-LOOP RESULT LARGE RECOIL QUARK
ISSN号	0550-3213
通讯作者	Li, XQ (reprint author), Henan Normal Univ, Dept Phys, Xinxiang 453007, Henan, Peoples R China.
英文摘要	We perform the two-loop matching calculation for heavy-to-light currents from QCD onto soft-collinear effective theory for the complete set of Dirac structures. The newly obtained matching coefficients enter several phenomenological applications, of which we discuss heavy-to-light form factor ratios and exclusive radiative decays. as well as the semi-inclusive decay (B) over bar -> X(s)l(+)l(-). For this decay, we observe a significant shift of the forward-backward asymmetry zero and find q(0)(2) = (3.34(-0.25)(+0.22)) GeV2 for an invariant mass cut, m(X)(cut) = 2.0 GeV. (C) 2010 Elsevier B.V. All rights reserved.
学科主题	Physics
收录类别	SCI
资助信息	DFG [Sonderforschungsbereich/Transregio 9]; Helmholtz alliance "Physics at the Terascale"; Alexander-von-Humboldt Stiftung; National Natural Science Foundation [11005032]
原文出处	http://dx.doi.org/10.1016/j.nuclphysb.2010.09.022
语种	英语
WOS记录号	WOS:000285024100006
公开日期	2013-05-17
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/14423]
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	Bell, G,Beneke, M,Huber, T,et al. Heavy-to-light currents at NNLO in SCET and semi-inclusive (B)over-bar -> X(s)l(+)l(-) decay[J]. NUCLEAR PHYSICS B,2011,843(1):143-176.
APA	Bell, G,Beneke, M,Huber, T,&Li, XQ.(2011).Heavy-to-light currents at NNLO in SCET and semi-inclusive (B)over-bar -> X(s)l(+)l(-) decay.NUCLEAR PHYSICS B,843(1),143-176.
MLA	Bell, G,et al."Heavy-to-light currents at NNLO in SCET and semi-inclusive (B)over-bar -> X(s)l(+)l(-) decay".NUCLEAR PHYSICS B 843.1(2011):143-176.