2-loop QCD corrections to Bc-meson leptonic constant

Details 2-loop QCD corrections to Bc-meson leptonic constant 2-loop QCD corrections to Bc-meson leptonic constant

2003-02-17

arxiv.org/abs/hep-ph/0302132v3

Eur.Phys.J.C50:801-808,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 1 figure, v2: typos in appendix corrected; v3: Mathematica ant text files with results attached

Scientific paper

10.1140/epjc/s10052-007-0255-1

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.

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