Strange and charm mesons at FAIR

TL;DR

This paper investigates the behavior of strange and charm mesons in hot, dense matter conditions relevant for the FAIR/GSI experiments, focusing on their spectral functions, resonances, and implications for scalar mesons.

Contribution

It introduces a self-consistent coupled-channel approach to study mesons in hot dense matter, including effects like Pauli blocking, mean-field binding, and meson self-energies, with applications to experimental conditions at FAIR.

Findings

Analysis of in-medium spectral functions of strange and charm mesons.

Identification of the evolution of baryonic resonances with density and temperature.

Implications for scalar resonances D_{s0}(2317) and X(3700).

Abstract

We study the properties of strange and charm mesons in hot and dense matter within a self-consistent coupled-channel approach for the experimental conditions of density and temperature expected for the CBM experiment at FAIR/GSI. The in-medium solution at finite temperature accounts for Pauli blocking effects, mean-field binding of all the baryons involved, and meson self-energies. We analyze the behaviour in this hot and dense environment of dynamically-generated baryonic resonances together with the evolution with density and temperature of the strange and open-charm meson spectral functions. We test the spectral functions for strange mesons using energy-weighted sum rules and finally discuss the implications of the properties of charm mesons on the D_{s0}(2317) and the predicted X(3700) scalar resonances.