Helicity conservation and factorization-suppressed charmless B decays
Abstract
Toward the goal of extracting the weak angle alpha, the decay B^0/B^0-bar to a_0^{+/-}pi^{-/+} was recently measured. The decay B^0 to a_0^+pi^- is not only forbidden in the factorization limit of the tree interaction, but also strongly suppressed for the penguin interaction if short-distance QCD dominates. This makes extraction of alpha very difficult from a^{+/-}\pi^{-/+}. We examine the simlar factorization-suppressed decays, in particular, B^0\to b_1^+pi^-. The prospect of obtaining alpha is even less promising with b_1^{+/-}pi^{-/+}. To probe how well the short-distance dominance works, we emphasize importance of testing helicity conservation in the charmless B decays with spins.
Cite
@article{arxiv.hep-ph/0202222,
title = {Helicity conservation and factorization-suppressed charmless B decays},
author = {M. Suzuki},
journal= {arXiv preprint arXiv:hep-ph/0202222},
year = {2014}
}
Comments
The version to appear in Phys. Rev. D after minor alterations