https://repositorio.ufba.br/handle/ri/15880
Tipo: | Artigo de Periódico |
Título: | Heavy flavor relaxation in a hadronic medium |
Título(s) alternativo(s): | Nuclear Physics A |
Autor(es): | Cabrera, Daniel Abreu, Luciano Melo Llanes-Estrada, Felipe J. Rincon, Juan M. Torres |
Autor(es): | Cabrera, Daniel Abreu, Luciano Melo Llanes-Estrada, Felipe J. Rincon, Juan M. Torres |
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. |
Palavras-chave: | Diffusion coefficient Charmed and bottomed mesons Heavy-ion collisions Chiral perturbation theory Heavy-quark effective theory |
Tipo de Acesso: | Acesso Aberto |
URI: | http://repositorio.ufba.br/ri/handle/ri/15880 |
Data do documento: | 2013 |
Aparece nas coleções: | Artigo Publicado em Periódico (FIS) |
Arquivo | Descrição | Tamanho | Formato | |
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1-s2.0-S0375947413003382-main.pdf | 150,78 kB | Adobe PDF | Visualizar/Abrir |
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