Heavy hybrid mesons in the QCD sum rule

Details Heavy hybrid mesons in the QCD sum rule Heavy hybrid mesons in the QCD sum rule

2011-03-03

arxiv.org/abs/1103.0602v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

12pages, 7 figures

Scientific paper

We study the spectra of the hybrid mesons containing one heavy quark ($q\bar{Q}g$) within the framework of QCD sum rules in the heavy quark limit. The derived sum rules are stable with the variation of the Borel parameter within their corresponding working ranges. The extracted binding energy for the heavy hybrid doublets $H(S)$ and $M(T)$ is almost degenerate. We also calculate the pionic couplings between these heavy hybrid and the conventional heavy meson doublets using the light-cone QCD sum rule method. The extracted coupling constants are rather small as a whole. With these couplings we make a rough estimate of the partial widths of these pionic decay channels.

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