Theoretical Analysis of B -> D^{**} pi Decays
High Energy Physics - Phenomenology
2009-10-30 v2
Abstract
The decays B -> D^{**} pi, where D^{**} is a narrow p-wave charm resonance, are investigated in the context of a generalized factorization hypothesis, including the leading nonfactorizable corrections. The decay rates for these processes are related to the corresponding semileptonic rates at maximum recoil. It is pointed out that the current data on the branching ratio for the decay B^- -> D_2^{*0} pi^- may pose a problem for theory. We predict that future, more accurate measurements of this branching ratio will find a value B(B^- -> D_2^{*0} pi^-) = 4 * 10^{-4}, a factor 5 lower than the current central value.
Cite
@article{arxiv.hep-ph/9709327,
title = {Theoretical Analysis of B -> D^{**} pi Decays},
author = {Matthias Neubert},
journal= {arXiv preprint arXiv:hep-ph/9709327},
year = {2009}
}
Comments
11 pages; 1 reference added and some typos corrected; version to appear in Physics Letters B