Strong interaction of doubly heavy spin-3/2 baryons with light vector mesons

TL;DR

This paper calculates the strong coupling constants between doubly heavy spin-3/2 baryons and light vector mesons using light-cone QCD sum rules, providing key parameters for understanding strong interactions in hadronic physics.

Contribution

It introduces a method to accurately compute strong coupling constants for doubly heavy baryons with light vector mesons, removing contamination from spin-1/2 states.

Findings

Calculated four coupling constants $g_1$, $g_2$, $g_3$, $g_4$ for specific baryon-meson interactions.

Provided numerical values for these coupling constants to aid theoretical and experimental research.

Enhanced understanding of strong interactions among heavy baryons and light mesons.

Abstract

We calculate the strong coupling constants among the doubly heavy spin-$ \frac{3}{2} $ baryons $\Xi^*_{QQ}$ and $\Omega^*_{QQ}$, with $ Q $ and $ Q' $ being $ c$ or $ b $ quark, with light vector meson by means of the light-cone QCD sum rules. The matrix elements defining these vertices are described by four coupling constants $ g_1$, $ g_2$, $ g_3$, and $ g_4 $. The unwanted pollution coming from the doubly heavy spin-$ \frac{1}{2} $ baryons are removed by a special ordering of Dirac matrices and selection of appropriate Lorentz structures. The strong coupling constants are basic parameters that carry information on the nature of the strong interaction among hadronic multiplets. Investigation of these parameters may help physicists in the construction of the strong potentials among the doubly heavy baryons and light vector mesons. The values obtained for the strong coupling constants may also help experimental groups in analyses of the data produced at various hadron colliders.