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Quark/gluon content of eta(1295) and eta(1440)

A. V. Anisovich
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Abstract

The quark/gluon content of eta(1295) and eta(1440) mesons is discussed, mesons being considered as members of the first radial excitation 2^1S_0 qqbar nonet. Recent results on eta(1295) and eta(1440) two-photon widths from L3 together with the information on radiative J/Psi decay allow one to evaluate the eta(1295)/eta(1440) mixing angle and the admixture of the glueball component. We found that eta(1440) is dominantly non-strange qqbar state, with a possible admixture of the glueball component (20 pm 20)%.

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A. V. Anisovich. 2001-04-01. Quark/gluon content of eta(1295) and eta(1440). https://arxiv.org/abs/hep-ph/0104005

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