On universality of the coupling of neutrinos to Z
Eduard Masso
Abstract
We employ an effective Lagrangian approach and use LEP data to place severe bounds on universality violations of the couplings of νe, νμ, and ντ to the Z boson. Our results justify the assumption of universality in these couplings that is usually made, as for example in the analysis of solar neutrinos detected at SNO.
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