arXiv:hep-ph/9901405·v2·High Energy Physics — Phenomenology

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

R. Escribano · J. M. Frere (Universite Libre de Bruxelles)

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.

Comments: 13 pages. Introduction slightly modified. A second Table added. Conclusions remain unchanged

Phenomenological evidence for the energy dependence of the η−η′ mixing angle

Abstract

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