Axial anomaly, vector meson dominance and π<SUP>0</SUP> → γγ at finite temperature

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dc.contributor.authorDominguez, CA
dc.contributor.authorLoewe, M
dc.date.accessioned2025-01-21T01:31:22Z
dc.date.available2025-01-21T01:31:22Z
dc.date.issued2000
dc.description.abstractA thermal Finite Energy QCD Sum Rule is used to determine the temperature behaviour of the omega rho pi strong coupling. This coupling decreases with increasing T and vanishes at the critical temperature, a likely signal for quark deconfinement. This is then used in the Vector Meson Dominance (VMD) expression for the pi(0) --> gamma gamma amplitude, which is also found to vanish at the critical temperature, as expected. This result supports the validity of VMD at T not equal 0. However, if VMD would not hold at finite temperature, then there is no prediction for the pi(0) --> gamma gamma amplitude. (C) 2000 Elsevier Science B.V. All rights reserved.
dc.fuente.origenWOS
dc.identifier.issn0370-2693
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/97050
dc.identifier.wosidWOS:000087410800018
dc.issue.numero2-4
dc.language.isoen
dc.pagina.final298
dc.pagina.inicio295
dc.revistaPhysics letters b
dc.rightsacceso restringido
dc.titleAxial anomaly, vector meson dominance and π<SUP>0</SUP> → γγ at finite temperature
dc.typeartículo
dc.volumen481
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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