Braun, V. M. and Manashov, A. N. (2014) Conformal symmetry of the Lange-Neubert evolution equation. PHYSICS LETTERS B, 731. pp. 316-319. ISSN 0370-2693, 1873-2445
Full text not available from this repository.Abstract
The Lange-Neubert evolution equation describes the scale dependence of the wave function of a meson built of an infinitely heavy quark and light antiquark at light-like separations, which is the hydrogen atom problem of QCD. It has numerous applications to the studies of B-meson decays. We show that the kernel of this equation can be written in a remarkably compact form, as a logarithm of the generator of special conformal transformation in the light-ray direction. This representation allows one to study solutions of this equation in a very simple and mathematically consistent manner. Generalizing this result, we show that all heavy-light evolution kernels that appear in the renormalization of higher-twist B-meson distribution amplitudes can be written in the same form. (C) 2014 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | QCD FACTORIZATION; MESON DECAYS; HEAVY-QUARK; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Braun > Group Vladimir Braun |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 14 Nov 2019 10:36 |
| Last Modified: | 14 Nov 2019 10:36 |
| URI: | https://pred.uni-regensburg.de/id/eprint/10324 |
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