Universality-breaking effects in leptonic z-decays
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TLDR
It is found that universality-breaking effects increase quadratically with the heavy Majorana neutrino mass and may be observed in the current experiments at the CERN [ital e][sup +][ital e[minus]] collider LEP.Abstract:
We analyze the possibility of universality violation in diagonal leptonic decays of the [ital Z] boson, in the context of interfamily seesaw'' models. In a minimal extension of the standard model with right-handed neutrino fields, we find that universality-breaking effects increase quadratically with the heavy Majorana neutrino mass and may be observed in the current experiments at the CERN [ital e][sup +][ital e[minus]] collider LEP.read more
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