Constraints on singlet right-handed neutrinos coming from the Z0-width
C. O. Escobar, O. L. G. Peres, V. Pleitez, R. Zukanovich Funchal
Abstract
We study the constraints on masses and mixing angles imposed by the measured Z0 invisible width, in a model in which a singlet right-handed neutrino mixes with all the Standard Model neutrinos.
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