Vector meson dominance and g(rho pi pi) at finite temperature from QCD sum rules

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dc.contributor.authorDominguez, CA
dc.contributor.authorFetea, MS
dc.contributor.authorLoewe, M
dc.date.accessioned2025-01-21T01:33:13Z
dc.date.available2025-01-21T01:33:13Z
dc.date.issued1997
dc.description.abstractA Finite Energy QCD sum rule at non-zero temperature is used to determine the q(2)- and the T-dependence of the rho pi pi vertex function in the space-like region, A comparison with an independent QCD determination of the electromagnetic pion form factor F-pi at T not equal 0 indicates that Vector Meson Dominance holds to a very good approximation at finite temperature. At the same time, analytical evidence for deconfinement is obtained from the result that g(rho pi pi)(q(2),T) vanishes at the critical temperature T-c, independently of q(2). Also, by extrapolating the rho pi pi form factor to q(2) = 0, it is found that the pion radius increases with increasing T, and it diverges at T = T-c. (C) 1997 Elsevier Science B.V.
dc.fuente.origenWOS
dc.identifier.issn0370-2693
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/97390
dc.identifier.wosidWOS:A1997XP70100024
dc.issue.numero1-2
dc.language.isoen
dc.pagina.final153
dc.pagina.inicio149
dc.revistaPhysics letters b
dc.rightsacceso restringido
dc.titleVector meson dominance and g(rho pi pi) at finite temperature from QCD sum rules
dc.typeartículo
dc.volumen406
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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