Renormalization of B-meson distribution amplitudes
Renormalization of B-meson distribution amplitudes
复制标题
B 介子分布振幅的重正化
DOI：
--
复制
发表时间：
2009
期刊：
影响因子：
--
通讯作者：
N. Offen
中科院分区：
文献类型：
--
作者：
S. Descotes;N. Offen
Exclusive decays of B-mesons provide important tools to test the Standard Model and tosearch for physics beyond it. Hadronic inputs encoding soft physics are not only form factorsbut also light-cone distribution amplitudes (LCDAs). In particular the B-meson LCDAs enter theparametrization of the hard-scattering part of hadronic matrix elements of bilocal current opera-tors where large momentum is tranferred to the soft spectator quark [1-10]. Impressive progresshas been made in the calculation of the hard scattering amplitudes entering factorization theorems,see e.g. [11-15] for theB → PP case, but one limiting factor for the extraction of fundamentalparameters is the uncertainty coming from the hadronic input. Recent years have seen several anal-yses concerning the renormalization properties [16, 17, 18] and the shape of the B-meson LCDAs[4, 18, 19, 20, 21, 22, 23]. Up to now these analyses were restricted to the two-particle case or toleading order with the exception of [23]. Here we present the results of [24] for the renormalizationof the two-particleB-meson LCDAs taking into account mixing with three-parton LCDAs and insection (2.3) the results of a new calculation for the combination of three-particle LCDAsΨ
DOI：
10.1016/j.nuclphysb.2003.09.026
发表时间：
2003-08
期刊：
Nuclear Physics
影响因子：
--
作者：
M. Beneke;M. Neubert
通讯作者：
M. Beneke;M. Neubert