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Recent progress on in-medium properties of heavy mesons from finite-temperature EFTs

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Mesons with heavy flavor content are an exceptional probe of the hot QCD
medium produced in heavy-ion collisions. In the past few years, significant
progress has been made toward describing the modification of the properties
of heavy mesons in the hadronic phase at finite temperature. Ground-state and
excited-state thermal spectral properties can be computed within a self-
consistent many-body approach that employs appropriate hadron-hadron
effective interactions, providing a unique opportunity to confront hadronic
Effective Field Theory predictions with recent and forthcoming lattice QCD
simulations and experimental data. In this article, we revisit the application of
the imaginary-time formalism to extend the calculation of unitarized scattering
amplitudes from the vacuum to finite temperature. These methods allow us to
obtain the ground-state thermal spectral functions. The thermal properties of the
excited states that are dynamically generated within the molecular picture are also
directly accessible. We present here the results of this approach for the open-
charm and open-bottom sectors. We also analyze how the heavy-flavor transport
properties, which are strongly correlated to experimental observables in heavy-
ion collisions, are modified in hot matter. In particular, transport coefficients can
be computed using an off-shell kinetic theory that is fully consistent with the
effective theory describing the scattering processes. The results of this procedure
for both charm and bottom transport coefficients are briefly discussed.

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Articles publicats en revistes (Física Quàntica i Astrofísica)

# metadata.dc.title[].value
Recent progress on in-medium properties of heavy mesons from finite-temperature EFTs