Analysis of the vertex $D^*D^* \rho$ with the light-cone QCD sum rules

TL;DR

This paper uses light-cone QCD sum rules to analyze the $D^*D^* ho$ vertex and determine its strong coupling constant, which is crucial for understanding charmonium absorption in quark-gluon plasma research.

Contribution

It provides a new calculation of the $g_{D^*D^* ho}$ coupling constant using light-cone QCD sum rules, aligning with SU(4) symmetry and vector meson dominance predictions.

Findings

Calculated $g_{D^*D^* ho}$ consistent with theoretical models.

Supports the relevance of SU(4) symmetry in heavy meson interactions.

Provides input for charmonium absorption cross section evaluations.

Abstract

In this article, we analyze the vertex $D^*D^*\rho$ with the light-cone QCD sum rules. The strong coupling constant $g_{D^*D^*\rho}$ is an important parameter in evaluating the charmonium absorption cross sections in searching for the quark-gluon plasmas. Our numerical value for the $g_{D^*D^*\rho}$ is consistent with the prediction of the effective SU(4) symmetry and vector meson dominance theory.