In-medium mass shifts of $B_c^{(*)}, B_s^{(*)}$ and $D_s^{(*)}$ mesons

TL;DR

This paper predicts the in-medium mass shifts of heavy mesons like $B_c^{(*)}$, $B_s^{(*)}$, and $D_s^{(*)}$ in nuclear matter using a flavor-SU(5) effective Lagrangian and quark-meson coupling models, showing negative mass shifts.

Contribution

It introduces a novel combined approach using flavor-SU(5) effective Lagrangian and QMC model to estimate meson mass shifts in nuclear matter.

Findings

Mesons exhibit negative mass shifts in symmetric nuclear matter.

Enhanced self-energies in nuclear matter compared to free space.

Predictions based on one-loop self-energy calculations.

Abstract

We present our predictions for the Lorentz scalar mass shifts of two-flavored heavy mesons, $B_c^{(*)}, B_s^{(*)}$ and $D_s^{(*)}$ in symmetric nuclear matter. The in-medium mass shifts are estimated by evaluating the lowest order one-loop self-energies of the mesons based on a flavor-SU(5) effective Lagrangian approach. In-medium properties necessary for the estimates are calculated by the quark-meson coupling (QMC) model. The enhanced self-energies of the mesons in symmetric nuclear matter relative to those in free space, yield the negative mass shifts of these mesons.