Coherent Elastic Neutrino Nucleus Scattering (CE$\nu$NS) as a probe of $Z'$ through kinetic and mass mixing effects

TL;DR

This paper explores how CE$ u$NS experiments can detect or constrain a hypothetical $Z'$ boson through kinetic and mass mixing effects, highlighting their complementarity with other experimental methods.

Contribution

It provides a detailed analysis of CE$ u$NS sensitivity to $Z'$ models, emphasizing the impact of coupling non-universality and comparing with other experimental constraints.

Findings

CE$ u$NS experiments have significant potential to probe $Z'$ interactions.

Sensitivity depends strongly on $Z'$ coupling non-universality.

CE$ u$NS offers complementary constraints to fixed target and atomic parity violation experiments.

Abstract

We examine the current constraints and future sensitivity of Coherent Elastic Neutrino-Nucleus Scattering (CE$\nu$NS) experiments to mixing scenarios involving a $Z^\prime$ which interacts via portals with the Standard Model. We contrast the results against those from fixed target, atomic parity violation, and solar neutrino experiments. We demonstrate a significant dependence of the experimental reach on the $Z'$ coupling non-universality and the complementarity of CE$\nu$NS to existing searches.