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Accounting for Slow J/psi from B Decay

Chun-Khiang Chua·Wei-Shu Hou·Gwo-Guang Wong
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Abstract

A slow J/psi excess exists in the inclusive B -> J/psi+X spectrum, and is indicative of some hadronic effect. From color octet nature of c cbar pair in b-> c cbar s decay, one such possibility would be B -> J/psi+ K_g decay, where K_g is a hybrid resonance with sbar g q constituents. We show that a K_g resonance of ~ 2 GeV mass and suitably broad width could be behind the excess.

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Chun-Khiang Chua, Wei-Shu Hou, Gwo-Guang Wong. 2003-07-21. Accounting for Slow J/psi from B Decay. https://doi.org/10.1103/physrevd.68.054012

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