Tau neutrino as a probe of charged non-standard interactions at DUNE

TL;DR

This paper investigates how charged-current non-standard interactions involving tau neutrinos can be detected at DUNE, showing that the experiment's near detector could significantly improve current bounds on such interactions.

Contribution

The study demonstrates that DUNE's near detector has the potential to surpass existing bounds on charged-current non-standard interactions involving tau neutrinos.

Findings

Near detector sensitivity exceeds current bounds by an order of magnitude.

Tau neutrino channel provides a promising probe for charged non-standard interactions.

Results highlight the importance of pion decay effects on neutrino fluxes.

Abstract

In this work, we study the influence of charged-current non-standard interactions (CC-NSI) at a DUNE-like experiment. We are particularly interested in the tau neutrino channel accessible at DUNE, given the higher energy neutrino flux expected to be achieved by the experiment. We focus on CC-NSI that may affect the pion decay, the primary source of neutrinos for DUNE. We show that the expected sensitivity at the near detector may supersede the present bounds coming directly from pion decay by one order of magnitude.