Details

Autor(en) / Beteiligte

• Shen, Yue-Long
• Wei, Yan-Bing
• Lü, Cai-Dian

Titel

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

Ist Teil von

• Physical review. D, 2018-03, Vol.97 (5), Article 054004

Ort / Verlag

College Park: American Physical Society

Erscheinungsjahr

2018

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Within the framework of the B-meson light-cone sum rules, we review the calculation of radiative corrections to the three B→π transition form factors at leading power in Λ/mb. 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 light-cone distribution amplitude to solve these evolution equations and obtain renormalization group improved sum rules for the B→π form factors. Results of the form factors are extrapolated to the whole physical q2 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 Λ/mb at tree level, is not considered in this paper.