Radiative VPgamma transitions and eta-eta' mixing

Details Radiative VPgamma transitions and eta-eta' mixing Radiative VPgamma transitions and eta-eta' mixing

2000-12-05

arxiv.org/abs/hep-ph/0012049v1

Phys.Lett. B503 (2001) 271-276

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages

Scientific paper

10.1016/S0370-2693(01)00161-7

A value for the $\eta$-$\eta^\prime$ mixing angle is extracted from the data on $VP\gamma$ transitions using simple quark-model ideas. The set of data covers {\it all} possible radiative transitions between the pseudoscalar and vector meson nonets. Two main ingredients of the model are the introduction of flavour-dependent overlaps for the various $q\bar{q}$ wave functions and the use of the quark-flavour basis to describe the $\eta$-$\eta^\prime$ system. In this basis the mixing angle is found to be $\phi_P=(37.7\pm 2.4)^\circ$.

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