Neutrino mass generation with large $SU(2{)}_L$ multiplets under local $U(1{)}_{L_{\mu }-L_{\tau }}$ symmetry

Abstract

We propose a model of neutrino mass matrix with large $SU(2)$ multiplets and gauged $U(1{)}_{L_{\mu }-L_{\tau }}$ symmetry, in which we introduce $SU(2)$ quartet scalar and quintet fermions with nonzero $L_{\mu }-L_{\tau }$ charge. Then we investigate the neutrino mass structure and explore phenomenologies of large multiplet fields at the collider, particularly, focussing on doubly- and singly- charged exotic leptons from the quintet.

Comments: 14 pages, 2 tables, 3 figures; accepted version for publication in Physics Letters B