# A light $Z^\prime$ for the $R_K$ puzzle and nonstandard neutrino interactions

## TL;DR

This paper proposes a light Z' boson model that explains the R_K puzzle and muon g-2 discrepancy, predicts nonstandard neutrino interactions, and suggests experimental tests at DUNE.

## Contribution

It introduces a 10 MeV Z' boson coupling to muons, unifying explanations for R_K and muon g-2 anomalies, and predicts observable neutrino interactions at DUNE.

## Key findings

- A 10 MeV Z' can explain R_K and muon g-2 anomalies.
- Predicted nonstandard neutrino interactions detectable at DUNE.
- Model provides a unified framework for flavor anomalies.

## Abstract

We show that the $R_K$ puzzle in LHCb data and the discrepancy in the anomalous magnetic moment of the muon can be simultaneously explained if a 10 MeV mass $Z^\prime$ boson couples to the muon but not the electron, and that clear evidence of the nonstandard matter interactions of neutrinos induced by this coupling may be found at DUNE.