$\rho$ Meson Decays of Heavy Hybrid Mesons

TL;DR

This paper calculates the couplings of $ ho$ mesons with heavy hybrid mesons using light-cone QCD sum rules, revealing generally small coupling constants and mild Borel parameter dependence.

Contribution

It provides the first detailed calculation of $ ho$ meson couplings to heavy hybrid doublets within the light-cone QCD sum rule framework.

Findings

Coupling constants are generally small.

Sum rules show mild dependence on Borel parameters.

Provides insights into heavy hybrid meson interactions.

Abstract

We calculate the $\rho$ meson couplings between the heavy hybrid doublets H^h/S^h/M^h/T^h and the ordinary q\bar{Q} doublets in the framework of the light-cone QCD sum rule. The sum rules obtained rely mildly on the Borel parameters in their working regions. The resulting coupling constants are rather small in most cases.