Charm diffusion in a pion gas implementing unitarity, chiral and heavy quark symmetries

Detalhes bibliográficos
Autor(a) principal: Abreu, Luciano Melo
Data de Publicação: 2011
Outros Autores: Cabrera, Daniel, Estrada, Felipe J. Llanes, Rincon, Juan M. Torres
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://www.repositorio.ufba.br/ri/handle/ri/5446
Resumo: texto completo: acesso restrito. p.2737–2772.
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spelling Abreu, Luciano MeloCabrera, DanielEstrada, Felipe J. LlanesRincon, Juan M. TorresAbreu, Luciano MeloCabrera, DanielEstrada, Felipe J. LlanesRincon, Juan M. Torres2012-02-25T14:53:03Z20110003-491http://www.repositorio.ufba.br/ri/handle/ri/5446v. 326.texto completo: acesso restrito. p.2737–2772.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.Submitted by Ana Valéria de Jesus Moura (anavaleria_131@hotmail.com) on 2012-02-25T14:53:03Z No. of bitstreams: 1 nps59.tmp.pdf: 692410 bytes, checksum: aac2f6cdfe4d978db2323fb021602a49 (MD5)Made available in DSpace on 2012-02-25T14:53:03Z (GMT). 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dc.title.pt_BR.fl_str_mv Charm diffusion in a pion gas implementing unitarity, chiral and heavy quark symmetries
dc.title.alternative.pt_BR.fl_str_mv Annals of Physics
title Charm diffusion in a pion gas implementing unitarity, chiral and heavy quark symmetries
spellingShingle Charm diffusion in a pion gas implementing unitarity, chiral and heavy quark symmetries
Abreu, Luciano Melo
Charmed mesons
Heavy ion collisions
Diffusion coefficient
Chiral perturbation theory
Heavy quark effective theory
title_short Charm diffusion in a pion gas implementing unitarity, chiral and heavy quark symmetries
title_full Charm diffusion in a pion gas implementing unitarity, chiral and heavy quark symmetries
title_fullStr Charm diffusion in a pion gas implementing unitarity, chiral and heavy quark symmetries
title_full_unstemmed Charm diffusion in a pion gas implementing unitarity, chiral and heavy quark symmetries
title_sort Charm diffusion in a pion gas implementing unitarity, chiral and heavy quark symmetries
author Abreu, Luciano Melo
author_facet Abreu, Luciano Melo
Cabrera, Daniel
Estrada, Felipe J. Llanes
Rincon, Juan M. Torres
author_role author
author2 Cabrera, Daniel
Estrada, Felipe J. Llanes
Rincon, Juan M. Torres
author2_role author
author
author
dc.contributor.author.fl_str_mv Abreu, Luciano Melo
Cabrera, Daniel
Estrada, Felipe J. Llanes
Rincon, Juan M. Torres
Abreu, Luciano Melo
Cabrera, Daniel
Estrada, Felipe J. Llanes
Rincon, Juan M. Torres
dc.subject.por.fl_str_mv Charmed mesons
Heavy ion collisions
Diffusion coefficient
Chiral perturbation theory
Heavy quark effective theory
topic Charmed mesons
Heavy ion collisions
Diffusion coefficient
Chiral perturbation theory
Heavy quark effective theory
description texto completo: acesso restrito. p.2737–2772.
publishDate 2011
dc.date.issued.fl_str_mv 2011
dc.date.accessioned.fl_str_mv 2012-02-25T14:53:03Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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dc.identifier.uri.fl_str_mv http://www.repositorio.ufba.br/ri/handle/ri/5446
dc.identifier.issn.none.fl_str_mv 0003-491
dc.identifier.number.pt_BR.fl_str_mv v. 326.
identifier_str_mv 0003-491
v. 326.
url http://www.repositorio.ufba.br/ri/handle/ri/5446
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.pt_BR.fl_str_mv doi:10.1016/j.aop.2011.06.006
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFBA
instname:Universidade Federal da Bahia (UFBA)
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instname_str Universidade Federal da Bahia (UFBA)
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collection Repositório Institucional da UFBA
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