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|Title: ||Heavy flavor relaxation in a hadronic medium|
|Other Titles: ||Nuclear Physics A|
|Authors: ||Cabrera, Daniel|
Abreu, Luciano Melo
Llanes-Estrada, Felipe J.
Rincon, Juan M. Torres
|Keywords: ||Diffusion coefficient;Charmed and bottomed mesons;Heavy-ion collisions;Chiral perturbation theory;Heavy-quark effective theory|
|Issue Date: ||2013|
|Abstract: ||Charm and bottom transport coefficients in a medium constituted of light mesons, such as is formed in the hadronic phase of heavy-ion collisions, are obtained within an effective field theory approach implementing heavy-quark symmetry and chiral symmetry breaking. Heavy flavor propagates in the medium as D/BD/B and D⁎/B⁎D⁎/B⁎ degrees of freedom, and unitarization of the lowest order heavy–light meson amplitudes is used in order to reach high temperatures. The latter accounts for dynamically generated resonances in isospin 1/2 channels, a feature that leads to a more efficient heavy-flavor diffusion. We discuss the temperature and momentum dependence of the friction and diffusion coefficients in a transport approach up to temperatures of about T≃150 MeVT≃150 MeV, and provide estimates of the charm/bottom relaxation lengths and momentum loss. Implications for heavy-meson spectrum observables in heavy-ion collisions are discussed.|
|Description: ||Texto completo: acesso restrito. p. 505–511|
|Appears in Collections:||Artigos Publicados em Periódicos (FIS)|
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