Vector meson mixing and charge symmetry violation
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Data
1996-03-07
Autores
O'Connell, H. B.
Williams, A. G.
Bracco, M. [UNESP]
Krein, G. [UNESP]
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Resumo
We discuss the consistency of the traditional vector meson dominance (VMD) model for photons coupling to matter, with the vanishing of vector meson-meson and meson-photon mixing self-energies at q2 = 0. This vanishing of vector mixing has been demonstrated in the context of rho-omega mixing for a large class of effective theories. As a further constraint on such models, we here apply them to a study of photon-meson mixing and VMD. As an example we compare the predicted momentum dependence of one such model with a momentum-dependent version of VMD discussed by Sakurai in the 1960's. We find that it produces a result which is consistent with the traditional VMD phenomenology. We conclude that comparison with VMD phenomenology can provide a useful constraint on such models.
Descrição
Palavras-chave
Charge symmetry, Rho-omega mixing, Vector meson, Vector meson dominance
Como citar
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, v. 370, n. 1-2, p. 12-16, 1996.