Heavy Quark Kinetic Energy in B Mesons by a QCD Relativistic Potential Model

Abstract

The matrix element of the kinetic energy operator between B meson states is computed by means of a QCD relativistic potential model, with the result: ${\mu }_{\pi }^2=0.66Ge{V}^2$. A comparison with the outcome of other theoretical approaches and a discussion of the phenomenological implications of this result are carried out.

Comments: Final Version, Accepted for Publication in Mod. Phys. Lett. A. Latex, 12 pages, 2 figures