Electron and Muon $(g-2{)}_{e,\mu }$ Anomalous Magnetic Moment in $U(1{)}_{L_e-L_{\mu }}$ Symmetry Model

Abstract

The nature of neutrino (whether Majorana or Dirac) and the origin of neutrino masses are still some of the mysteries to be resolved. Also, the recent results on (g-2)${}_{e,\mu }$ measurements deviate from the Standard Model (SM) predictions and motivate us towards new physics beyond the SM. In this work, we propose a model with the minimal field content in the framework of anomaly free extension of Standard Model; i.e. U(1)${}_{L_e-L_{\mu }}$ symmetry model. We find this model capable of explaining the low energy neutrino phenomenology and anomalous magnetic moment(g-2)${}_{e,\mu }$ of electron and muon, simultaneously. The field content is extended by a SU(2)${}_L$ singlet scalar field $\varphi$ and three right handed neutrinos N${}_R$(R = 1,2,3). Thus, the neutrino masses are generated using the Type-I seesaw mechanism. The extended model leads to the results, which are in consistency with the experimental values of (g-2)${}_{e,\mu }$ and also satisfy all the relevant experimental data.

Comments: 13 pages, 10 figures and 2 tables