Braun, V. M. and Ji, Yao and Manashov, A. N. (2019) Two-loop evolution equation for the B-meson distribution amplitude. PHYSICAL REVIEW D, 100 (1): 014023. ISSN 2470-0010, 2470-0029
Full text not available from this repository.Abstract
We derive the two-loop evolution equation of the B-meson light-cone distribution amplitude which is the last missing element for the next-to-next-to-leading logarithmic resummation of QCD corrections to B decays in QCD factorization. We argue that the evolution kernel to all orders in perturbation theory can be written as a logarithm of the generator of special conformal transformations times the cusp anomalous dimension, up to a scheme-dependent overall constant. Up to this constant term, the evolution kernel to a given order in perturbation theory can be obtained from the calculation of special conformal anomaly at one order less.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | CONFORMAL SYMMETRY; QCD FACTORIZATION; ANOMALOUS DIMENSIONS; DECAYS; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics Physics > Institute of Theroretical Physics > Chair Professor Braun Physics > Institute of Theroretical Physics > Chair Professor Braun > Group Vladimir Braun |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 02 Apr 2020 12:20 |
| Last Modified: | 02 Apr 2020 12:20 |
| URI: | https://pred.uni-regensburg.de/id/eprint/26618 |
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