We calculate the form factors for the semileptonic decays of the B meson to D and D∗ mesons in a Bethe-Salpeter model. We show that our model is consistent with the constraints of Heavy Quark Effective Theory (HQET) and we extract the matrix elements that represent the 1/mQ corrections to the form factors in HQET. With available data, we obtain Vcb=(31.9±1.4)×10−3.
@article{arxiv.hep-ph/9605397,
title = {B --> D(D^*) Form Factors in a Bethe-Salpeter model},
author = {A. Abd El-Hady and Alakabha Datta and K. S. Gupta and J. P. Vary},
journal= {arXiv preprint arXiv:hep-ph/9605397},
year = {2014}
}