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arXiv · 0704.2599

Inclusive Charm Production in chi_b Decays

Geoffrey T. Bodwin·Eric Braaten·Daekyoung Kang·Jungil Lee
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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.

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Geoffrey T. Bodwin, Eric Braaten, Daekyoung Kang, Jungil Lee. 2007-09-21. Inclusive Charm Production in chi_b Decays. https://doi.org/10.1103/physrevd.76.054001

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