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Phenomenological evidence for the energy dependence of the $η-η'$ mixing angle

R. Escribano·J. M. Frere
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Abstract

A phenomenological analysis on various decay processes is performed using an energy-dependent $η-η'$ mixing angle scheme. Special attention is given to the radiative couplings between lowest-lying vector and pseudoscalar mesons. The agreement between our predictions and the experimental values is remarkable. This analysis opens a connection to two-angle fits in the $η-η'$ sector.

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R. Escribano, J. M. Frere. 1999-06-04. Phenomenological evidence for the energy dependence of the $η-η'$ mixing angle. https://doi.org/10.1016/s0370-2693(99)00629-2

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