S-Wave Single Heavy Baryons with Spin-3/2 at Finite Temperature

TL;DR

This study investigates how the masses and residues of spin-3/2 single heavy baryons change with temperature using QCD sum rules, revealing stability at low temperatures and rapid variations near the pseudo-critical temperature.

Contribution

It introduces a finite temperature QCD sum rule analysis for spin-3/2 heavy baryons, including new operators from energy-momentum tensor contributions.

Findings

Baryon parameters are stable at low temperatures.

Rapid changes occur near the pseudo-critical temperature.

Results agree with experimental data at zero temperature.

Abstract

The thermal behavior of the spectroscopic parameters of the S-wave single heavy baryons $ \Sigma_{Q}^{*}, \Xi_{Q}^{*}$ and $ \Omega_{Q}^{*} $ with spin-3/2 are investigated in QCD at finite temperature. We analyze the variations of the mass and residue of these baryons taking into consideration the contributions of QCD thermal condensates up to dimension eight in Wilson expansion. At finite temperature, due to the breakdown of the Lorentz invariance by the choice of reference frame and presence of an extra $O(3)$ symmetry, some new four-dimensional operators come out in the form of the fermionic and gluonic parts of the energy momentum tensor that are taken into account in the calculations. Our analyses show that at lower temperatures, the parameters of baryons under consideration are not affected by the medium. These parameters, however, show rapid variations with respect to temperature at higher temperatures near to a pseudo-critical temperature, after which the baryons are melted. The results of the masses and residues at $ T\rightarrow 0 $ limit are compatible with the available experimental data and predictions of other theoretical studies.