Properties of heavy mesons at finite temperature
Gloria Montaña, Angels Ramos, Laura Tolós
SciPost Phys. Proc. 3, 038 (2020) · published 26 February 2020
- doi: 10.21468/SciPostPhysProc.3.038
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Proceedings event
24th European Few Body Conference
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.
Authors / Affiliations: mappings to Contributors and Organizations
See all Organizations.- 1 Gloria Montaña,
- 1 Angels Ramos,
- 2 3 4 Laura Tolós
- 1 Institut de Ciènces del Cosmos / Institute of Cosmos Sciences, University of Barcelona [ICCUB]
- 2 Goethe-Universität Frankfurt am Main / Goethe University Frankfurt
- 3 Institut de Ciències de l'Espai / Institute of Space Sciences [ICE]
- 4 Institut d'Estudis Espacials de Catalunya [IEEC]
- Deutsche Forschungsgemeinschaft / German Research FoundationDeutsche Forschungsgemeinschaft [DFG]
- European Commission [EC]
- Ministerio de Economía y Competitividad (MINECO) (through Organization: Ministerio de Economía, Industria y Competitividad / Ministry of Economy, Industry and Competitiveness [MINECO])
- Ministerio de Educación y Cultura - Spain (MEC) (through Organization: Ministerio de Educación y Cultura - España / Ministry of Education and Culture - Spain [MEC Spain])