RI UFBA >
Instituto de Física >
Programa de Pós-Graduação em Física (PPGFIS) >
Artigos Publicados em Periódicos (PPGFIS) >
Please use this identifier to cite or link to this item:
|Title: ||Transport properties of bottomed mesons in a hot mesonic gas|
|Authors: ||Abreu, Luciano Melo|
Torres-Rincon, Juan M.
|Keywords: ||Bottomed mesons;Heavy-quark effective theory|
|Issue Date: ||2013|
|Publisher: ||American Physical Society|
|Citation: ||Phys. Rev. D 87, 034019|
|Abstract: ||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.|
|Appears in Collections:||Artigos Publicados em Periódicos (PPGFIS)|
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.