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metadata.dc.type: | Artigo de Periódico |
Título : | Transport properties of bottomed mesons in a hot mesonic gas |
Autor : | Abreu, Luciano Melo Cabrera, Daniel Torres-Rincon, Juan M. |
metadata.dc.creator: | Abreu, Luciano Melo Cabrera, Daniel Torres-Rincon, Juan M. |
Resumen : | In this work we evaluate the B-meson drag and diffusion coefficients in a hot medium constituted of light mesons (π, K, K⎯⎯⎯, and η). We treat the B-meson and B*-meson interactions with pseudo-Goldstone bosons in chiral perturbation theory at next-to-leading order within the constraints from heavy quark symmetry and employ standard unitarization techniques of next-to-leading order amplitudes in order to account for dynamically generated resonances (leading to a more efficient heavy-flavor diffusion) and thus reach higher temperatures. We estimate individual meson contributions from the gas to the transport coefficients and perform a comparison with other findings in literature. We report a bottom relaxation length of about 80 fm at a temperature of 150 MeV and for typical momenta of 1 GeV, at which our approach is reliable. Compared to a charm relaxation length of 40 fm in the same conditions, we conclude that the B mesons provide a cleaner probe of the early stages of a heavy-ion collision. |
Palabras clave : | Bottomed mesons Heavy-quark effective theory |
Editorial : | American Physical Society |
Citación : | Phys. Rev. D 87, 034019 |
metadata.dc.rights: | Acesso Aberto |
URI : | http://repositorio.ufba.br/ri/handle/ri/14740 |
Fecha de publicación : | 2013 |
Aparece en las colecciones: | Artigo Publicado em Periódico (PPGFIS) |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
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Abreu.Cabrera.Torres.PhysRevD.87.034019.pdf | 517,9 kB | Adobe PDF | Visualizar/Abrir |
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