Título:
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Finite temperature pion vector form factors in chiral perturbation theory
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Autores:
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Llanes Estrada, Felipe José ;
Gómez Nicola, Ángel ;
Peláez Sagredo, José Ramón
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Tipo de documento:
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texto impreso
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Editorial:
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Elsevier Science BV, 2005-01-27
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Dimensiones:
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application/pdf
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Nota general:
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info:eu-repo/semantics/openAccess
info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física
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Tipo = Artículo
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Resumen:
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We discuss the thermal behaviour of the pion vector form factors and calculate them in one-loop chiral perturbation theory. The perturbative result is used to analyze the T dependent electromagnetic pion charge radius, obtaining a rough estimate of the deconfinement critical temperature. Imposing thermal unitarity, we generate the ? resonance pole for the form factor in the center of mass frame. The ? peak height in the modulus of the form factor decreasesfor increasing temperature, while its width increases and the peak position is slightly shifted downwards for T _ 150 MeV. These results point in the direction suggested by many analysis of dilepton production data in relativistic heavy ion collisions.
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En línea:
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https://eprints.ucm.es/id/eprint/23305/1/Llanes-Estrada_FJ52.pdf
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