2-loop QCD corrections to Bc-meson leptonic constant
High Energy Physics - Phenomenology
2008-11-26 v3
Abstract
We present results for two-loop QCD corrections to the short distance coefficient that governs leptonic decay of Bc-meson. After brief discussion of the technics of asymptotic threshold expansion used to perform this calculation, we give comments on the numerical value of two-loop corrections and its impact on NRQCD description of Bc-meson bound state dynamics.
Cite
@article{arxiv.hep-ph/0302132,
title = {2-loop QCD corrections to Bc-meson leptonic constant},
author = {Andrei I. Onishchenko and Oleg L. Veretin},
journal= {arXiv preprint arXiv:hep-ph/0302132},
year = {2008}
}
Comments
12 pages, 1 figure, v2: typos in appendix corrected; v3: Mathematica ant text files with results attached