Phenomenological evidence for the energy dependence of the $η-η'$ mixing angle
arXiv:hep-ph/9901405 · doi:10.1016/S0370-2693(99)00629-2
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.
13 pages. Introduction slightly modified. A second Table added. Conclusions remain unchanged