Accounting for Slow J/psi from B Decay
Chun-Khiang Chua, Wei-Shu Hou, Gwo-Guang Wong
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+ Kg decay, where Kg is a hybrid resonance with sbar g q constituents. We show that a Kg resonance of ~ 2 GeV mass and suitably broad width could be behind the excess.
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