Testing new physics in oscillations at a neutrino factory

Denton, Peter B. [Brookhaven National Laboratory (BNL), Upton, NY (United States)] (ORCID:000000025209872X); Gehrlein, Julia [Colorado State University, Fort Collins, CO (United States)] (ORCID:0000000212350505); Kong, Chui-Fan [Shanghai Jiao Tong University (China)] (ORCID:0009000770105085)

doi:10.1016/j.nuclphysb.2025.117040

DOE OSTI · 3030849

Testing new physics in oscillations at a neutrino factory

Denton, Peter B. [Brookhaven National Laboratory (BNL), Upton, NY (United States)] (ORCID:000000025209872X)·Gehrlein, Julia [Colorado State University, Fort Collins, CO (United States)] (ORCID:0000000212350505)·Kong, Chui-Fan [Shanghai Jiao Tong University (China)] (ORCID:0009000770105085)

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Abstract

A neutrino factory is a potential successor to the upcoming generation of neutrino oscillation experiments and a possible precursor to next-generation muon colliders. Such a machine would provide a well characterized beam of , , , and neutrinos with comparable statistics. Here we show the sensitivity of a neutrino factory to new oscillation physics scenarios such as vector neutrino non-standard interactions and CPT violation. We study two different potential setups for a neutrino factory with different assumptions on charge identification in the far detector. We find that a neutrino factory can improve over most of the current constraints on these scenarios and over forecasted constraints by DUNE, even when doubling DUNE's statistics. Additionally, we find that a neutrino factory can break degeneracies between the standard oscillation parameters and neutrino non-standard interaction parameters present at DUNE.

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Denton, Peter B. [Brookhaven National Laboratory (BNL), Upton, NY (United States)] (ORCID:000000025209872X), Gehrlein, Julia [Colorado State University, Fort Collins, CO (United States)] (ORCID:0000000212350505), Kong, Chui-Fan [Shanghai Jiao Tong University (China)] (ORCID:0009000770105085). 2025-07-25. Testing new physics in oscillations at a neutrino factory. https://doi.org/10.1016/j.nuclphysb.2025.117040

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