Scalar dark matter and Muon $g-2$ in a $U(1)_{L_μ-L_τ}$ model

Abstract

We consider a simple scalar dark matter model within the frame of gauged Lµ − Lτ symmetry. A gauge boson Z as well as two scalar fields S and Φ are introduced to the Standard Model (SM). S and Φ are SM singlet but both with U (1)L µ−Lτ charge. The real component and imaginary component of S can acquire different masses after spontaneously symmetry breaking, and the lighter one can play the role of dark matter which is stabilized by the residual Z2 symmetry. A viable parameter space is considered to discuss the possibility of light dark matter as well as co-annihilation case, and we present current (g − 2)µ anomaly, Higgs invisible decay, dark matter relic density as well as direct detection constriants on the parameter space.

Muon g − 2, B → K(∗)μ+μ− anomalies, and leptophilic dark matter in U(1)μ−τ gauge symmetry

“…[42][43][44][45][46][47] for neutrino oscillations to control lepton flavor structure, refs. [28,29,[48][49][50][51][52][53][54][55][56][57][58][59] for the muon g − 2, refs. [60][61][62][63][64][65][66][67][68][69] for b → sµ + µ − anomalies, and (or) DM.…”

Muon $g-2$, $B\to K^{(*)}μ^+ μ^-$ anomalies, and leptophilic dark matter in $U(1)_{μ-τ}$ gauge symmetry

“…In fact, there is a wide variety of recent applications of U (1) µ−τ models, which are distinguished by additional particle contents to address flavor anomalies; Refs [42][43][44][45][46][47] for neutrino oscillations to control lepton flavor structure, Refs [28,29,[48][49][50][51][52][53][54][55][56][57][58][59] for muon g− [60,61,66] while flavor dependent charge assignment in the SM quark sector is considered in ref. [62].…”