Probing Source and Detector NSI parameters at the DUNE Near Detector

Abstract

We investigate the capability of the DUNE Near Detector (ND) to constrain Non Standard Interaction parameters (NSI) describing the production of neutrinos (${\epsilon }_{\alpha \beta }^s$) and their detection (${\epsilon }_{\alpha \beta }^d$). We show that the DUNE ND is able to reject a large portion of the parameter space allowed by DUNE Far Detector analyses and to set the most stringent bounds from accelerator neutrino experiments on $|{\epsilon }_{\mu e}^{s,d}|$ for wide intervals of the related phases. We also provide simple analytic understanding of our results as well as a numerical study of their dependence on the systematic errors, showing that the DUNE ND offers a clean environment where to study source and detector NSI.

15 pages, 5 figures, refined simulations and updated results, version accepted for publication in PRD

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• Snowmass White Paper: Beyond the Standard Model effects on Neutrino Flavor
• Tau Neutrinos in the Next Decade: from GeV to EeV
• Model-Independent Constraints on Non-Unitary Neutrino Mixing from High-Precision Long-Baseline Experiments
• Tau Tridents at Accelerator Neutrino Facilities
• New physics from oscillations at the DUNE near detector, and the role of systematic uncertainties
• Excess of Tau events at SND@LHC, FASER$\nu$ and FASER$\nu$2