Mixed Heavy Quark Hybrid Mesons, Decay Puzzles, and RHIC

Details Mixed Heavy Quark Hybrid Mesons, Decay Puzzles, and RHIC Mixed Heavy Quark Hybrid Mesons, Decay Puzzles, and RHIC

2009-03-05

arxiv.org/abs/0903.1120v3

Phys.Rev.D79:114026,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, 15 figures to be published in Physical Review D

Scientific paper

10.1103/PhysRevD.79.114026

We estimate the energy of the lowest Charmonium and Upsilon states with hybrid admixtures using the method of QCD Sum Rules. Our results show that the $\Psi'(2S)$ and $\Upsilon(3S)$ states both have about a 50% admixture of hybrid and meson components. From this we find explanations of both the famous $\rho-\pi$ puzzle for Charmonium, and the unusual pattern of $\sigma$ decays that have been found in $\Upsilon$ decays. Moreover, this picture can be used for predictions of heavy quark production with the octet model for RHIC.

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