Neutrino mass generation with large SU(2)L multiplets under local U(1)Lμ−Lτ symmetry

We propose a model of neutrino mass matrix with large $SU\left(2\right)$ multiplets and gauged $U{\left(1\right)}_{L_{\mu }-L_{\tau }}$ symmetry, in which we introduce $SU\left(2\right)$ 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, focusing on doubly- and singly- charged exotic leptons from the quintet.