Abstract

Motivated by recent experiments at LEP (Z→l+l−γγ, with Mγγ≃59GeV), we examine the possibility that such events are explained by a Bjorken process with a resonant Higgs (Mho≃59GeV) decaying to γγ. Our model is an N-doublet-Higgs model without CP-violation. Under the simplifying assumption that (N−k) doublets (k≥1) decouple from the fermion sector, we could explain the observed events if: i) (N−1)≥2 and ii) the masses of the corresponding (N−1) neutral scalars are either completely or almost degenerate, i.e. the decay Z→l+l−γγ proceeds now via several overlapping resonances.