Probing light vector mediators with coherent scattering at future facilities

TL;DR

Future experiments using coherent elastic neutrino-nucleus scattering can effectively probe light Z' mediators, potentially revealing new physics related to muon g-2 anomalies and cosmic neutrino features.

Contribution

This study evaluates the sensitivity of upcoming neutrino experiments to light Z' mediators, highlighting their potential to explore unexplored parameter space.

Findings

Experiments can test regions beyond current limits.

Potential to explain muon g-2 anomaly.

Possible insights into cosmic neutrino spectrum features.

Abstract

Future experiments dedicated to the detection of Coherent Elastic Neutrino-Nucleus Scattering may be powerful tools in probing light new physics. In this paper we study the sensitivity on light $Z'$ mediators of two proposed experiments: a directional low pressure Time Projection Chamber detector, $\nu$BDX-DRIFT, that will utilize neutrinos produced at the Long Baseline Neutrino Facility, and several possible experiments to be installed at the European Spallation Source. We compare the results obtained with existing limits from fixed-target, accelerator, solar neutrino and reactor experiments. Furthermore, we show that these experiments have the potential to test unexplored regions that, in some case, could explain the anomalous magnetic moment of the muon or peculiar spectral features in the cosmic neutrino spectrum observed by IceCube.