Constraints on the charged-current non-standard neutrino interactions induced by the gauge boson W′

Many new physics scenarios predict the existence of extra charged gauge boson $ W'$, which can induce charged-current (CC) non-standard neutrino interactions (NSI). We investigate constraints on CC NSI in model-independent fashion via considering W'$ contributions to lepton flavor violating (LFV) decays $\ell_{i}\rightarrow \ell_{j}\gamma$, pure leptonic conservation (FC) \ell_{j}\nu_{i}\bar{\nu_{j}}$, pion meson, semileptonic $\tau$ decays, and superallowed $\beta$ decays. find that are generally stronger than ones for with first generation quarks. The most stringent arise from LFV decay $\mu \rightarrow e\gamma$.