Accounting for Slow J/psi from B Decay

Details Accounting for Slow J/psi from B Decay Accounting for Slow J/psi from B Decay

2003-05-16

arxiv.org/abs/hep-ph/0305180v2

Phys.Rev. D68 (2003) 054012

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 2 figures. To appear in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.68.054012

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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