Factorization in exclusive semileptonic radiative B decays
High Energy Physics - Phenomenology
2009-11-11 v2
Abstract
We derive a new factorization relation for the semileptonic radiative decay B -> \pi \ell \nu \gamma in the kinematical region of a slow pion p_\pi ~ \Lambda and an energetic photon E_\gamma >> \Lambda, working at leading order in \Lambda/m_b. In the limit of a soft pion, the nonperturbative matrix element appearing in this relation can be computed using chiral perturbation theory. We present a phenomenological study of this decay, which may be important for a precise determination of the exclusive nonradiative decay.
Cite
@article{arxiv.hep-ph/0508095,
title = {Factorization in exclusive semileptonic radiative B decays},
author = {Vincenzo Cirigliano and Dan Pirjol},
journal= {arXiv preprint arXiv:hep-ph/0508095},
year = {2009}
}
Comments
10 pages, 3 figures; minor corrections, one reference added