Partial widths for the decays eta(1295) -> gamma gamma and eta(1440) -> gamma gamma

Details Partial widths for the decays eta(1295) -> gamma gamma and eta(1440) -> gamma gamma Partial widths for the decays eta(1295) -> gamma gamma and eta(1440) -> gamma gamma

1999-10-13

arxiv.org/abs/hep-ph/9910321v1

Eur.Phys.J.A6:247-249,1999

Physics

High Energy Physics

High Energy Physics - Phenomenology

3 pages, LaTeX, 4 EPS figures, epsfig.sty

Scientific paper

10.1007/s100500050342

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 q\bar q. The calculations show that partial widths being of the order of 0.1 keV are dominantly due to the n\bar n meson component while the contribution of the s\bar s component is small.

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