Theoretical and phenomenological constraints on form factors for radiative and semi-leptonic B-meson decays

被引：84

作者：

Bharucha, Aoife ^{[1
]}

Feldmann, Thorsten ^{[2
]}

Wick, Michael ^{[2
]}

机构：

[1] Univ Durham, Dept Phys, IPPP, Durham DH1 3LE, England

[2] Tech Univ Munich, Dept Phys, D-85748 Garching, Germany

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2010年 / 09期

关键词：

QCD; NLO Computations; Sum Rules; RESONANCE PHYSICS; HEAVY; QCD; FACTORIZATION;

D O I：

10.1007/JHEP09(2010)090

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We study transition form factors for radiative and rare semi-leptonic B-meson decays into light pseudoscalar or vector mesons, combining theoretical constraints and phenomenological information from Lattice QCD, light-cone sum rules, and dispersive bounds. We pay particular attention to form factor parameterisations which are based on the so-called series expansion, and study the related systematic uncertainties on a quantitative level. In this context, we also provide the NLO corrections to the correlation function between two flavour-changing tensor currents, which enters the unitarity constraints for the coefficients in the series expansion.

引用

页数：45