Medium modification of singly heavy baryons in a pion-mean field approach

TL;DR

This paper studies how the masses of singly heavy baryons change in nuclear matter using a pion-mean field approach, extending previous free-space models with density-dependent parameters to predict medium modifications.

Contribution

It introduces a method to incorporate density-dependent parameters into a pion-mean field model, enabling predictions of heavy baryon mass shifts in nuclear matter.

Findings

Masses of singly heavy baryons decrease with increasing nuclear density.

The model successfully reproduces free-space baryon masses and predicts medium modifications.

Density dependence of baryon masses provides insights into nuclear matter effects.

Abstract

We investigate how the masses of singly heavy baryons undergo changes in nuclear matter. The mass spectrum of the singly heavy baryons was successfully described in a pion-mean field approach even with isospin symmetry breaking, based on which we extend the investigation to the medium modification of the singly heavy baryons. Since all dynamical parameters were determined by explaining the mass spectrum of the SU(3) light and singly heavy baryons in free space, we can directly implement the density-dependent functionals for the dynamical parameters, of which the density dependence was already fixed by reproducing the bulk properties of nuclear matter and medium modification of the SU(3) light baryons. We predict and discuss the density dependence of the masses of the singly heavy baryons.