https://doi.org/10.1140/epjc/s10052-007-0255-1
Regular Article - Theoretical Physics
Two-loop QCD corrections to the leptonic constant of the Bc-meson
1
II. Institut für Theoretische Teilchenphysik, Universität Hamburg, 22761, Hamburg, Germany
2
Institute for High Energy Physics, Protvino, Russia
* e-mail: veretin@mail.desy.de
Received:
18
October
2006
Revised:
31
January
2007
Published online:
15
March
2007
We present results for two-loop QCD corrections to the short-distance coefficient that governs leptonic decay of the Bc-meson. After a brief discussion of the technicalities of the asymptotic expansion used to perform this calculation, we give comments on the numerical values of the two-loop corrections and their impact on the NRQCD description of the Bc-meson bound state.
© Springer-Verlag Berlin Heidelberg, 2007
