Journal
PHYSICAL REVIEW D
Volume 97, Issue 5, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.97.054004
Keywords
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Funding
- Natural Science Foundation of Shandong Province, China [ZR2015AQ006]
- National Natural Science Foundation of China [11375208, 11521505, 11235005, 11447009]
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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.
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