Exploring Dark Matter, Neutrino mass and flavour anomalies in L μ – L τ model

Abstract

We investigate Majorana dark matter in a new variant of U(1) Lμ – Lτ gauge extension of Standard Model, containing three additional neutral fermions Ne, Nμ, Nτ , along with a (, 1, 1/3) scalar Leptoquark (SLQ) and an inert doublet, to study the phenomenology of dark matter, neutrino mass generation and flavour anomalies on a single platform. The lightest mass eigenstate of the Nμ, Nτ neutral fermions plays the role of dark matter. We compute the WIMP-nucleon cross section in leptoquark portal and the relic density mediated by inert doublet components, leptoquark and the new Z′ boson. We constrain the parameter space consistent with Planck limit on relic density, PIC0-60 and LUX bounds on spin-dependent direct detection cross section. We also discuss about the neutrino mass generation at one-loop level and the viable parameter region to explain current neutrino oscillation data. The Z′ gauge boson of extended U(1) symmetry and the SLQ play an important role in settling the known issues of flavor sector.