Neutrino masses and mixing angles from leptoquark interactions

Abstract

In this paper we show that the mixing between leptoquarks (LQ's) from different $SU(2{)}_l$ multiplets can generate a non-trivial Majorana mass matrix for neutrinos through one loop self energy diagrams. Such mixing can arise from gauge invariant and renormalizable LQ-Higgs interaction terms after EW symmetry breaking. We use the experimental indication on neutrino oscillation to find constraints on specific combinations of LQ couplings to quark-lepton pairs and to the SM higgs boson. These constraints are compared with the ones from $\pi \to e{\bar{\nu }}_e$.

The expressions for majorana mass matrix of neutrinos have been corrected so that they are symmetric. Final version to be published in Physical Review D

References in corpus (1)

• Limits on the Majorana neutrino mass in the 0.1 eV range

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