Strong $D^{*}_sD_{s}\eta^{(\prime)}$ and $B^{*}_sB_{s}\eta^{(\prime)}$ vertices from QCD light-cone sum rules

TL;DR

This paper calculates the strong interaction vertices involving $D^{*}_sD_{s} ext{ and }B^{*}_sB_{s}$ mesons with $ ext{eta}$ and $ ext{eta}^{ extprime}$ mesons using light-cone QCD sum rules, including higher twist and NLO corrections.

Contribution

It provides a detailed calculation of these vertices with twist-4 accuracy, incorporating both quark and gluon components and axial anomaly effects, advancing the understanding of meson interactions.

Findings

Calculated coupling constants for $D^{*}_sD_{s} ext{ and }B^{*}_sB_{s}$ vertices.

Included next-to-leading order corrections and higher twist effects.

Accounted for quark and gluon components of $ exteta$ and $ exteta}^{ extprime}$ mesons.

Abstract

The strong $D^{*}_sD_{s}\eta^{(\prime)}$ and $B^{*}_sB_{s}\eta^{(\prime)}$ vertices are studied and the relevant couplings are calculated in the context of the light-cone QCD sum rule method with twist-4 accuracy by including the next-to-leading order corrections. In the analysis, both the quark and gluon components of the $\eta$ and $\eta^{\prime}$ mesons and the axial anomaly corrected higher twist distributions are included.