Gauged U(1) Lµ - Lτ model in light of muon g − 2 anomaly, neutrino mass and dark matter phenomenology

Patra, Sudhanwa and Soumya, Rao and Sahoo, Nirakar and Sahu, Narendra (2017) Gauged U(1) Lµ - Lτ model in light of muon g − 2 anomaly, neutrino mass and dark matter phenomenology. Nuclear Physics B, 917. pp. 317-336. ISSN 0550-3213

Full text not available from this repository. (Request a copy)

Abstract

Gauged U(1) Lµ - Lτ model has been advocated for a long time in light of muon anomaly, which is a more than 3σ discrepancy between the experimental measurement and the standard model prediction. We augment this model with three right-handed neutrinos (Ne , Nµ , Nτ) and a vector-like singlet fermion (χ) to explain simultaneously the non-zero neutrino masses and dark matter content of the Universe, while satisfying the anomalous muon g-2 constraints. We find that the model suffers stringent constraints from the simultaneous explanation of neutrino trident production and muon g-2 anomaly. In a large region of the parameter space, where contribution to muon g-2 anomaly comes partially and yet not ruled out by neutrino trident production, the model can explain the positron excess, observed at PAMELA, Fermi-LAT and AMS-02 through dark matter annihilation, while satisfying the relic density and direct detection limits.

[error in script]

IITH Creators: