Accounting for Slow J/psi from B Decay

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.

arXiv comment4 pages, 2 figures. To appear in Phys. Rev. D

References in corpus (7)

• Study of Inclusive Production of Charmonium Mesons in B Decay
• Quarkonium momentum distributions in photoproduction and B decay
• Looking for Exotic Multiquark States in Nonleptonic B Decays
• Observation of B->J/psi K1(1270)
• Probing for the Charm Content of $B$ and ${\rm Y}$ Mesons
• Study of B0-->J/Psi D(*) and etac D(*) in Perturbative QCD
• Evidence for B+ --> Jpsi p Lambda-bar and Search for B0 --> Jpsi p p-bar

Cited by in corpus (7)

• Contribution of final state interaction to the branching ratio of $B\to J/\psi D$
• Hybrid meson production by electromagnetic and weak interactions in a flux-tube simulation of lattice QCD
• Measurement of branching fractions for B \to J/ψηK decays and search for a narrow resonance in the J/ψηfinal state
• Rare decays of B-> J/ψD^(*) and B->η_c D^(*)in pQCD Approach
• Colour rearrangements in B-meson decays
• Search for B -> J/psi D Decays
• The momentum distribution of J/psi in B decays