Determination of the spectroscopic parameters of beauty-partners of $T_{cc}$ from QCD

TL;DR

This paper uses QCD sum rules to calculate the mass and residues of beauty partners of the recently discovered $T_{cc}^+$ tetra-quark, providing theoretical predictions for these exotic states.

Contribution

It introduces a QCD sum rule approach to determine the spectroscopic parameters of beauty partners of $T_{cc}^+$ within a hadronic molecular framework, expanding understanding of exotic tetra-quark states.

Findings

Calculated masses and residues of beauty partners of $T_{cc}^+$.

Comparison with other theoretical approaches.

Predictions to guide future experimental searches.

Abstract

Motivated by the recent discovery of a new tetra-quark $T_{cc}^+$ state with two charm quarks and two light quarks by LHCb collaboration, we calculate the spectroscopic parameters, namely, the mass and residues of beauty partners of $T_{cc}^+$ within QCD sum rules by using hadronic molecular $BB^*$ picture. The obtained results are compared with the predictions of different approaches in the literature.