Finite-temperature effects on D-meson properties

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 and 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.

Thermal modification of open heavy-flavor mesons from an effective hadronic theory

“…In this section we summarize our latest results on open-charm transport coefficients of Ref. [4], where we implemented the thermal scattering amplitudes and the D-meson spectral functions in order to take into account thermal and off-shell effects. After some justified approximations, the off-shell kinetic equation derived in [4] following the Kadanoff-Baym approach [14] reduces to an off-shell Fokker-Planck equation for the Green's function,…”

“…In this equation the drag force  and the diffusion coefficients B0 and B1 are defined off shell, as they are calculated using spectral functions, as well as thermal scattering amplitudes. They are defined in [4] as…”

“…where F stands for the average of the quantity F weighted with the heavy-meson spectral function, the T -matrix and the appropriate Bose-Einstein factors. Full details of the calculation and the results for these transport coefficients are given in [4]. [12] with data taken from [4].…”

“…Full details of the calculation and the results for these transport coefficients are given in [4]. [12] with data taken from [4].…”

“…[3] and off-shell transport coefficients in Ref. [4]. The main results are summarized in Sections 3 and 4 of this contribution, respectively.…”