Radiative decays of pseudoscalar (P) and vector (V) mesons and the process e^+e^- \to η' ρ

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dc.creatorBystritskiy, Yu. M.
dc.creatorKuraev, E. A.
dc.creatorSečanský, M.
dc.creatorVolkov, M. K.
dc.date2008-04-23
dc.date2008-09-23
dc.date.accessioned2026-07-07T10:16:11Z
dc.date.available2026-07-07T10:16:11Z
dc.descriptionRadiative decays of pseudoscalar and vector mesons are calculated in the framework of the chiral Nambu-Jona-Lasinio (NJL) model. We use the amplitude for triangle quark loops of anomalous type. In evaluating these loop integrals we use two methods. In the first one, we neglect the dependence of external momenta by reproducing the Wess-Zumino-Witten terms of effective chiral meson Lagrangian. In the second method, we take into account the momentum dependence of loop integrals omitting their imaginary part. This makes it possible to allow for quark confinement. As applied both the methods is in qualitative agreement with each other and with experimental data. The second method allows us to describe the electron-positron annihilation with production of $η'$ and $ρ$ mesons in the center of mass energy range from 1.6 to 3.5$\GeV$. The comparison with the recent experimental data is presented.
dc.description7 pages, 4 figures, 1 table
dc.identifierhttps://arxiv.org/abs/0804.3714
dc.identifierhttp://arxiv.org/abs/0804.3714
dc.identifierNucl.Phys.Proc.Suppl.181-182:210-214,2008
dc.identifierdoi:10.1016/j.nuclphysbps.2008.09.038
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/173418
dc.subjectHigh Energy Physics - Phenomenology
dc.titleRadiative decays of pseudoscalar (P) and vector (V) mesons and the process e^+e^- \to η' ρ
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