Leptonic constant of pseudoscalar B_c meson

Abstract

We calculate the leptonic constant for the ground pseudoscalar state of B_c meson in the framework of QCD-motivated potential model taking into account the two-loop anomalous dimension for the heavy quark current in the nonrelativistic QCD as matched with the full QCD.

Comments: 6 pages, RevTeX4 file, 3 eps-figures, several references and remarks added