Renormalization group analysis of B → π form factors with B-meson light-cone sum rules

被引：18

作者：

Shen, Yue-Long ^{[1
]}

Wei, Yan-Bing ^{[2
]}

Lu, Cai-Dian ^{[2
]}

机构：

[1] Ocean Univ China, Coll Informat Sci & Engn, Qingdao 266100, Shandong, Peoples R China

[2] Chinese Acad Sci, Inst High Energy Phys, POB 918 4, Beijing 100049, Peoples R China

来源：

PHYSICAL REVIEW D | 2018年 / 97卷 / 05期

基金：

中国国家自然科学基金;

关键词：

DISTRIBUTION AMPLITUDE; FACTORIZATION; SYMMETRY; CURRENTS; DECAY;

D O I：

10.1103/PhysRevD.97.054004

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Within the framework of the B-meson light-cone sum rules, we review the calculation of radiative corrections to the three B -> pi transition form factors at leading power in Lambda/m(b). To resum large logarithmic terms, we perform the complete renormalization group evolution of the correlation function. We employ the integral transformation which diagonalizes evolution equations of the jet function and the B-meson lightcone distribution amplitude to solve these evolution equations and obtain renormalization group improved sum rules for the B -> pi form factors. Results of the form factors are extrapolated to the whole physical q(2) region and are compared with that of other approaches. The effect of B-meson three-particle light-cone distribution amplitudes, which will contribute to the form factors at next-to-leading power in Lambda/m(b) at tree level, is not considered in this paper.

引用

页数：14

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