Thermal rho and sigma mesons from chiral symmetry and unitarity

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dc.creatorDobado, A.
dc.creatorNicola, A. Gomez
dc.creatorLlanes-Estrada, F. J.
dc.creatorPelaez, J. R.
dc.date2002-06-24
dc.date2002-10-03
dc.date.accessioned2026-07-07T11:47:33Z
dc.date.available2026-07-07T11:47:33Z
dc.descriptionWe study the temperature evolution of the rho and sigma mass and width, using a unitary chiral approach. The one-loop pion-pion scattering amplitude in Chiral Perturbation Theory at finite temperature 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 rho-pion-pion coupling increases. The rho behavior seems to be favored by experimental results. In the sigma case, it signals chiral symmetry restoration.
dc.description5 pages, 5 figures, revtex. References and brief comments added. Final version to appear in Phys. Rev. C
dc.identifierhttps://arxiv.org/abs/hep-ph/0206238
dc.identifierhttp://arxiv.org/abs/hep-ph/0206238
dc.identifierPhys.Rev.C66:055201,2002
dc.identifierdoi:10.1103/PhysRevC.66.055201
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/202611
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectNuclear Theory
dc.titleThermal rho and sigma mesons from chiral symmetry and unitarity
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