Finite-temperature effects on D-meson properties

TL;DR

This paper investigates how D-mesons behave in hot nuclear matter, focusing on their masses, widths, and interactions, using an effective field theory approach that respects symmetries and unitarity.

Contribution

It introduces a comprehensive method to analyze in-medium D-meson properties incorporating chiral and heavy-quark symmetries with self-consistent unitarity constraints.

Findings

Identification of in-medium masses and widths of D and D_s mesons.

Analysis of thermal evolution of chiral partners.

Calculation of transport coefficients below chiral restoration temperature.

Abstract

We study the spectroscopy and transport properties of charmed mesons in a thermal medium by applying an effective field theory based on chiral and heavy-quark symmetries in the imaginary time formalism. Relying on unitarity constraints and self-consistency we extract the in-medium properties (masses and widths) of $D$ and $D_s$ mesons and their interactions with light hadrons. We report our findings on 1) dynamically generated states, 2) thermal evolution of chiral partners, 3) in-medium scattering amplitudes, and 4) transport coefficients below the chiral restoration temperature.