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Thermal rho and sigma mesons from chiral symmetry and unitarity

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dc.contributor.authorDobado González, Antonio
dc.contributor.authorGómez Nicola, Ángel
dc.contributor.authorLlanes Estrada, Felipe José
dc.contributor.authorPeláez Sagredo, José Ramón
dc.date.accessioned2023-06-20T18:47:44Z
dc.date.available2023-06-20T18:47:44Z
dc.date.issued2002-11
dc.description©2002 The American Physical Society. Work supported by the Spanish CICYT projects, Grant Nos. FPA2000-0956, PB98-0782, and BFM2000-1326. J.R.P. acknowledges support from the CICYT-INFN collaboration, Grant No. 003P 640.15, and E. Oset for useful comments.
dc.description.abstractWe study the temperature evolution of the rho and sigma mass and width, using a unitary chiral approach. The one-loop pipi scattering amplitude in chiral perturbation theory at Tnot equal0 is unitarized via the inverse amplitude method. Our results predict a clear increase with T of both the rho and sigma widths. The masses decrease slightly for high T, while the rhopipi coupling increases. The rho behavior seems to be favored by experimental results. In the sigma case, it signals chiral symmetry restoration.
dc.description.departmentDepto. de Física Teórica
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.sponsorshipSpanish CICYT
dc.description.sponsorshipCICYT-INFN
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/22205
dc.identifier.doi10.1103/PhysRevC.66.055201
dc.identifier.issn0556-2813
dc.identifier.officialurlhttp://prc.aps.org/abstract/PRC/v66/i5/e055201
dc.identifier.relatedurlhttp://www.aps.org
dc.identifier.urihttps://hdl.handle.net/20.500.14352/58638
dc.issue.number5
dc.journal.titlePhysical Review C
dc.language.isoeng
dc.publisherAmer Physical Soc
dc.relation.projectIDFPA2000-0956
dc.relation.projectIDPB98-0782
dc.relation.projectIDBFM2000-1326
dc.relation.projectID003P 640.15
dc.rights.accessRightsopen access
dc.subject.cdu53
dc.subject.keywordChiral Perturbation-Theory
dc.subject.keywordFinite-Temperature
dc.subject.keywordPion-Scattering
dc.subject.keywordOne-Loop
dc.subject.keywordMass
dc.subject.ucmFísica (Física)
dc.subject.unesco22 Física
dc.titleThermal rho and sigma mesons from chiral symmetry and unitarity
dc.typejournal article
dc.volume.number66
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