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Campo DC | Valor | Idioma |
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dc.contributor.author | Abreu, Luciano Melo | - |
dc.contributor.author | Cabrera, Daniel | - |
dc.contributor.author | Estrada, Felipe J. Llanes | - |
dc.contributor.author | Rincon, Juan M. Torres | - |
dc.creator | Abreu, Luciano Melo | - |
dc.creator | Cabrera, Daniel | - |
dc.creator | Estrada, Felipe J. Llanes | - |
dc.creator | Rincon, Juan M. Torres | - |
dc.date.accessioned | 2012-02-25T14:53:03Z | - |
dc.date.issued | 2011 | - |
dc.identifier.issn | 0003-491 | - |
dc.identifier.uri | http://www.repositorio.ufba.br/ri/handle/ri/5446 | - |
dc.description | texto completo: acesso restrito. p.2737–2772. | pt_BR |
dc.description.abstract | We compute the charm drag and diffusion coefficients in a hot pion gas, such as is formed in a heavy ion collision after the system cools sufficiently to transit into the hadron phase. We fully exploit heavy quark effective theory (with both D and D∗ mesons as elementary degrees of freedom during the collision) and chiral perturbation theory, and employ standard unitarization to reach higher temperatures. We find that a certain friction and shear diffusion coefficients are almost p2-independent at a fixed temperature which simplifies phenomenological analysis. At the higher end of reliability of our calculation, T ≃ 150 MeV, we report a charm relaxation length λc ≃ 40 fm, in agreement with the model estimate of He, Fries and Rapp. The momentum of a 1 GeV charm quark decreases about 50 MeV per fermi when crossing the hadron phase. | pt_BR |
dc.language.iso | en | pt_BR |
dc.source | doi:10.1016/j.aop.2011.06.006 | pt_BR |
dc.subject | Charmed mesons | pt_BR |
dc.subject | Heavy ion collisions | pt_BR |
dc.subject | Diffusion coefficient | pt_BR |
dc.subject | Chiral perturbation theory | pt_BR |
dc.subject | Heavy quark effective theory | pt_BR |
dc.title | Charm diffusion in a pion gas implementing unitarity, chiral and heavy quark symmetries | pt_BR |
dc.title.alternative | Annals of Physics | pt_BR |
dc.type | Artigo de Periódico | pt_BR |
dc.identifier.number | v. 326. | pt_BR |
dc.embargo.liftdate | 10000-01-01 | - |
Aparece nas coleções: | Artigo Publicado em Periódico (FIS) |
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