Beneke, M. and Braun, V. M. and Ji, Yao and Wei, Yan-Bing (2018) Radiative leptonic decay B -> gamma lv(l) with subleading power corrections. JOURNAL OF HIGH ENERGY PHYSICS (7): 154. ISSN 1029-8479,
Full text not available from this repository. (Request a copy)Abstract
We reconsider the QCD predictions for the radiative decay B -> gamma lv(l) with an energetic photon in the fi nal state by taking into account the 1/E-gamma, 1/m(b) power-suppressed hard-collinear and soft corrections from higher-twist B-meson light-cone distribution amplitudes (LCDAs). The soft contribution is estimated through a dispersion relation and light-cone QCD sum rules. The analysis of theoretical uncertainties and the dependence of the decay form factors on the leading-twist LCDA phi+(omega) shows that the latter dominates. The radiative leptonic decay is therefore well suited to constrain the parameters of phi+(omega), including the fi rst inverse moment, 1/lambda(B), from the expected high-statistics data of the BELLE II experiment.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | MESON DISTRIBUTION AMPLITUDE; FORM-FACTORS; SUM-RULES; QCD; FACTORIZATION; SYMMETRY; Heavy Quark Physics; Perturbative QCD; Resummation |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Braun > Group Vladimir Braun |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 06 Mar 2020 12:48 |
| Last Modified: | 06 Mar 2020 12:48 |
| URI: | https://pred.uni-regensburg.de/id/eprint/14213 |
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