LEP $e^{+}\,e^{-}\,\rightarrow\,μ^{+}\, μ^{-}\,γ\,γ$ events and their consequences at future $e^+e^-$ colliders

V. A. Litvin, S. R. Slabospitsky

Published 1994-07-25Version 1

The $e^{+}\,e^{-}\,\rightarrow\,l^{+}\, \l^{-}\,\gamma\,\gamma$ anomalous events, detected by $L3$ de\-tec\-tor at $e^+ e^-$ $CERN-LEP$ collider have been analysed. It has been shown that the interpretation of such events as a manifestation of scalar (pseudoscalar) resonance with the mass of 60 GeV contradicts other experimental data. In case of a possible existence that kind of resonance, the perspectives to discover one in some processes at future $e^+e^-$ colliders have been discussed.