Future DUNE constraints on EFT

TL;DR

This paper explores how the upcoming DUNE neutrino experiment can significantly improve constraints on the Standard Model Effective Field Theory by analyzing precision measurements of neutrino interactions.

Contribution

It quantifies DUNE's sensitivity to dimension-6 SMEFT operators and compares its reach with other future experiments, highlighting its potential to probe operators suppressed by around 30 TeV.

Findings

DUNE can improve current SMEFT limits via neutrino scattering measurements.

Operators suppressed by ~30 TeV can be probed at DUNE.

DUNE's sensitivity overlaps with atomic parity violation and electron scattering experiments.

Abstract

In the near future, fundamental interactions at high-energy scales may be most efficiently studied via precision measurements at low energies. A universal language to assemble and interpret precision measurements is the so-called SMEFT, which is an effective field theory (EFT) where the Standard Model (SM) Lagrangian is extended by higher-dimensional operators. In this paper we investigate the possible impact of the DUNE neutrino experiment on constraining the SMEFT. The unprecedented neutrino flux offers an opportunity to greatly improve the current limits via precision measurements of the trident production and neutrino scattering off electrons and nuclei in the DUNE near detector. We quantify the DUNE sensitivity to dimension-6 operators in the SMEFT Lagrangian, and find that in some cases operators suppressed by an O(30) TeV scale can be probed. We also compare the DUNE reach to that of future experiments involving atomic parity violation and polarization asymmetry in electron scattering, which are sensitive to an overlapping set of SMEFT parameters.