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Properties of heavy mesons at finite temperature

by Gloria MontaƱa, Angels Ramos, Laura Tolos

Submission summary

As Contributors: Gloria Montana
Arxiv Link: https://arxiv.org/abs/1910.01384v1
Date submitted: 2019-10-04
Submitted by: Montana, Gloria
Submitted to: SciPost Physics Proceedings
Proceedings issue: 24th European Few Body Conference (University of Surrey, U.K.)
Domain(s): Theoretical
Subject area: High-Energy Physics - Phenomenology

Abstract

We study the properties of heavy mesons using a unitarized approach in a hot pionic medium, based on an effective hadronic theory. The interaction between the heavy mesons and pseudoscalar Goldstone bosons is described by a chiral Lagrangian at next-to-leading order in the chiral expansion and leading order in the heavy-quark mass expansion so as to satisfy heavy-quark spin symmetry. The meson-meson scattering problem in coupled channels with finite-temperature corrections is solved in a self-consistent manner. Our results show that the masses of the ground-state charmed mesons $D(0^-)$ and $D_s(1^-)$ decrease in a pionic environment at $T\neq 0$ and they acquire a substantial width. As a consequence, the behaviour of excited mesonic states (i.e. $D_{s0}^*(2317)^\pm$ and $D_0^*(2300)^{0,\pm}$), generated dynamically in our heavy-light molecular model, is also modified at $T\neq 0$. The aim is to test our results against Lattice QCD calculations in the future.

Current status:
Editor-in-charge assigned

Submission & Refereeing History

Submission 1910.01384v1 on 4 October 2019

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