Investigation of a0-f0 mixing

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dc.creatorHanhart, Christoph
dc.creatorKubis, Bastian
dc.creatorPelaez, Jose R.
dc.date2007-07-02
dc.date2007-10-24
dc.date.accessioned2026-07-07T11:17:25Z
dc.date.available2026-07-07T11:17:25Z
dc.descriptionWe investigate the isospin-violating mixing of the light scalar mesons a0(980) and f0(980) within the unitarized chiral approach. Isospin-violating effects are considered to leading order in the quark mass differences and electromagnetism. In this approach both mesons are generated through meson-meson dynamics. Our results provide a description of the mixing phenomenon within a framework consistent with chiral symmetry and unitarity, where these resonances are not predominantly q q-bar states. Amongst the possible experimental signals, we discuss observable consequences for the reaction J/Psi -> phi pi0 eta in detail. In particular we demonstrate that the effect of a0-f0 mixing is by far the most important isospin-breaking effect in the resonance region and can indeed be extracted from experiment.
dc.description15 pages, 9 figures; discussion extended, title changed, version published in Phys. Rev. D
dc.identifierhttps://arxiv.org/abs/0707.0262
dc.identifierhttp://arxiv.org/abs/0707.0262
dc.identifierPhys.Rev.D76:074028,2007
dc.identifierdoi:10.1103/PhysRevD.76.074028
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/193000
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Experiment
dc.subjectNuclear Theory
dc.titleInvestigation of a0-f0 mixing
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