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Partial widths for the decays $\eta(1295) \to \gamma\gamma$ and $\eta(1440) \to \gamma\gamma$

We discuss gamma gamma partial widths of pseudoscalar/isoscalar mesons eta(M) in the mass region M = 1000-1500 MeV. The transition amplitudes eta(1295) -> gamma gamma and eta(1440) -> gamma gamma are studied within an assumption that the decaying mesons are the members of the first radial exci...

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Detalles Bibliográficos
Autores principales: Anisovich, A.V., Anisovich, V.V., Nikonov, V.A., Montanet, L.
Lenguaje:eng
Publicado: 1999
Materias:
Acceso en línea:https://dx.doi.org/10.1007/s100500050342
http://cds.cern.ch/record/403554
Descripción
Sumario:We discuss gamma gamma partial widths of pseudoscalar/isoscalar mesons eta(M) in the mass region M = 1000-1500 MeV. The transition amplitudes eta(1295) -> gamma gamma and eta(1440) -> gamma gamma are studied within an assumption that the decaying mesons are the members of the first radial excitation nonet 2^1S_0 keV are dominantly due to the n\bar n meson component while the contribution of the s\bar s component is small.