Inclusive Charm Production in chi_b Decays
High Energy Physics - Phenomenology
2008-11-26 v2
Abstract
We calculate the inclusive decay rate of the spin-triplet bottomonium states chi_{bJ} into charm hadrons, including the leading-order color-singlet and color-octet bb-bar annihilation mechanisms. We also calculate the momentum distribution of the charm quark from the decay of chi_{bJ}. The infrared divergences from the color-singlet process bb-bar -> cc-bar g are factored into the probability density at the origin for a bb-bar pair in a color-octet state. That probability density can be determined phenomenologically from the fraction of decays of chi_{bJ} that include charm hadrons. It can then be used to predict the partial widths into light hadrons for all four states in the P-wave bottomonium multiplet.
Cite
@article{arxiv.0704.2599,
title = {Inclusive Charm Production in chi_b Decays},
author = {Geoffrey T. Bodwin and Eric Braaten and Daekyoung Kang and Jungil Lee},
journal= {arXiv preprint arXiv:0704.2599},
year = {2008}
}