Transport properties of bottomed mesons in a hot mesonic gas
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFBA |
Texto Completo: | http://repositorio.ufba.br/ri/handle/ri/14740 |
Resumo: | 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. |
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Abreu, Luciano MeloCabrera, DanielTorres-Rincon, Juan M.Abreu, Luciano MeloCabrera, DanielTorres-Rincon, Juan M.2014-03-12T18:36:22Z2013Phys. Rev. D 87, 0340191550-7998http://repositorio.ufba.br/ri/handle/ri/14740Phys. Rev. D vol. 87, n. 034019In 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.Submitted by Luciano Abreu (luciano.abreu@ufba.br) on 2014-03-10T13:56:01Z No. of bitstreams: 1 Abreu.Cabrera.Torres.PhysRevD.87.034019.pdf: 530334 bytes, checksum: 970147d014f29f2e6912dcce6a356c51 (MD5)Approved for entry into archive by Alda Lima da Silva (sivalda@ufba.br) on 2014-03-12T18:36:22Z (GMT) No. of bitstreams: 1 Abreu.Cabrera.Torres.PhysRevD.87.034019.pdf: 530334 bytes, checksum: 970147d014f29f2e6912dcce6a356c51 (MD5)Made available in DSpace on 2014-03-12T18:36:22Z (GMT). No. of bitstreams: 1 Abreu.Cabrera.Torres.PhysRevD.87.034019.pdf: 530334 bytes, checksum: 970147d014f29f2e6912dcce6a356c51 (MD5) Previous issue date: 2013Ministerio de Economıa y Competitividad, Spain; EU Integrated Infrastructure Initiative Hadron Physics Project; CAPES; Centro Nacional de Física de Partículas, Astropartículas y Nuclear (CPAN, Consolider-Ingenio 2010); Ministerio de Educacio´n, Cultura y Deporte, SpainAmerican Physical Societyhttp://dx.doi.org/10.1103/PhysRevD.87.034019reponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBABottomed mesonsHeavy-quark effective theoryTransport properties of bottomed mesons in a hot mesonic gasinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article10000-01-01info:eu-repo/semantics/openAccessengORIGINALAbreu.Cabrera.Torres.PhysRevD.87.034019.pdfAbreu.Cabrera.Torres.PhysRevD.87.034019.pdfapplication/pdf530334https://repositorio.ufba.br/bitstream/ri/14740/1/Abreu.Cabrera.Torres.PhysRevD.87.034019.pdf970147d014f29f2e6912dcce6a356c51MD51LICENSElicense.txtlicense.txttext/plain1345https://repositorio.ufba.br/bitstream/ri/14740/2/license.txt0d4b811ef71182510d2015daa7c8a900MD52TEXTAbreu.Cabrera.Torres.PhysRevD.87.034019.pdf.txtAbreu.Cabrera.Torres.PhysRevD.87.034019.pdf.txtExtracted texttext/plain53319https://repositorio.ufba.br/bitstream/ri/14740/3/Abreu.Cabrera.Torres.PhysRevD.87.034019.pdf.txtb70e4d23dfa1559cd746b28b8e702e76MD53ri/147402022-08-26 11:02:26.934oai:repositorio.ufba.br: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Repositório InstitucionalPUBhttp://192.188.11.11:8080/oai/requestopendoar:19322022-08-26T14:02:26Repositório Institucional da UFBA - Universidade Federal da Bahia (UFBA)false |
dc.title.pt_BR.fl_str_mv |
Transport properties of bottomed mesons in a hot mesonic gas |
title |
Transport properties of bottomed mesons in a hot mesonic gas |
spellingShingle |
Transport properties of bottomed mesons in a hot mesonic gas Abreu, Luciano Melo Bottomed mesons Heavy-quark effective theory |
title_short |
Transport properties of bottomed mesons in a hot mesonic gas |
title_full |
Transport properties of bottomed mesons in a hot mesonic gas |
title_fullStr |
Transport properties of bottomed mesons in a hot mesonic gas |
title_full_unstemmed |
Transport properties of bottomed mesons in a hot mesonic gas |
title_sort |
Transport properties of bottomed mesons in a hot mesonic gas |
author |
Abreu, Luciano Melo |
author_facet |
Abreu, Luciano Melo Cabrera, Daniel Torres-Rincon, Juan M. |
author_role |
author |
author2 |
Cabrera, Daniel Torres-Rincon, Juan M. |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Abreu, Luciano Melo Cabrera, Daniel Torres-Rincon, Juan M. Abreu, Luciano Melo Cabrera, Daniel Torres-Rincon, Juan M. |
dc.subject.por.fl_str_mv |
Bottomed mesons Heavy-quark effective theory |
topic |
Bottomed mesons Heavy-quark effective theory |
description |
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. |
publishDate |
2013 |
dc.date.issued.fl_str_mv |
2013 |
dc.date.accessioned.fl_str_mv |
2014-03-12T18:36:22Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
Phys. Rev. D 87, 034019 |
dc.identifier.uri.fl_str_mv |
http://repositorio.ufba.br/ri/handle/ri/14740 |
dc.identifier.issn.none.fl_str_mv |
1550-7998 |
dc.identifier.number.pt_BR.fl_str_mv |
Phys. Rev. D vol. 87, n. 034019 |
identifier_str_mv |
Phys. Rev. D 87, 034019 1550-7998 Phys. Rev. D vol. 87, n. 034019 |
url |
http://repositorio.ufba.br/ri/handle/ri/14740 |
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.publisher.none.fl_str_mv |
American Physical Society |
publisher.none.fl_str_mv |
American Physical Society |
dc.source.pt_BR.fl_str_mv |
http://dx.doi.org/10.1103/PhysRevD.87.034019 |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFBA instname:Universidade Federal da Bahia (UFBA) instacron:UFBA |
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Universidade Federal da Bahia (UFBA) |
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UFBA |
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UFBA |
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Repositório Institucional da UFBA |
collection |
Repositório Institucional da UFBA |
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