Temperature dependence of the properties of open heavy-flavor mesons

Abstract

We address the modification of open heavy-flavor mesons in a hot medium of light mesons within an effective theory approach consistent with chiral and heavy-quark spin-flavor symmetries and the use of the imaginarytime formalism to introduce the non-zero temperature effects to the theory. The unitarized scattering amplitudes, the ground-state self-energies and the corresponding spectral functions are calculated self-consistently. We use the thermal ground-state spectral functions obtained with this methodology to further calculate 1) open-charm meson Euclidean correlators, and 2) off-shell transport coefficients in the hadronic phase.

Molecular Nature of X(3872) in B 0 → K 0 X(3872) and B + K + X(3872) Decays

“…[42][43][44][45][46][47][48][49][50] In addition, using an effective hadron theory based on the hidden-gauge Lagrangian, the 𝑋(3872) resonance can be dynamically generated from the s-wave interaction of a pair of pseudoscalar and vector charmed mesons. [51] While within the nonrelativistic effective field theory, the one boson exchange model and the molecular hypothesis of the 𝑋(3872) resonance as a 𝐷 D* bound state, other s-wave hadronic molecules formed by a pair of ground state charmed and anticharmed mesons are proposed. [52][53][54] In Ref.…”

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

“…where the contribution of the continuum is weighted with respect to the ground-state contribution through the factor a. [12] with data taken from [3].…”

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

“…Figure3: T -matrix at finite temperature for the diagonal transitions in the sectors with charm C = 1 (bottom B = 1), spin J = 0 and strangeness and isospin (S , I) = {(0, 1/2), (1, 0)}. Figure extracted from[12] with data partially taken from[1].…”

“…The results are shown for temperatures below T c = 185 MeV [13] and for various values of the weight parameter a. Figure extracted from[12] with data taken from[3].…”