A multi-charged particle model with localU(1)_μ-τto explain muong–2, flavor physics, and possible collider signature

Abstract：

We consider a model with multi-charged particles, including vector-like fermions, and a charged scalar under a local $ U(1)_{\mu - \tau} $ symmetry. We search for an allowed parameter region explaining muon anomalous magnetic moment (muon $ g-2 $ ) and $ b \to s \ell^+ \ell^- $ anomalies, satisfying constraints from the lepton flavor violations, Zboson decays, meson anti-meson mixing, and collider experiments. Via numerical analysis, we explore the typical size of the muon $ g-2 $ and Wilson coefficients to explain the $ b \to s \ell^+ \ell^- $ anomalies in our model when all other experimental constraints are satisfied. Subsequently, we discuss the collider physics of the multicharged vectorlike fermions, considering a number of benchmark points in the allowed parameter space.