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CP-Violating Neutrino Non-Standard Interactions in Long-Baseline-Accelerator Data

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arxiv 2008.01110 v2 pith:FRSGCVID submitted 2020-08-03 hep-ph hep-ex

Peter B. Denton , Julia Gehrlein , Rebekah Pestes This is my paper
classification hep-phhep-ex
keywords dataneutrinocp-violatingappearanceepsiloninteractionslong-baselinenon-standard
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abstract

Neutrino oscillations in matter provide a unique probe of new physics. Leveraging the advent of neutrino appearance data from NOvA and T2K in recent years, we investigate the presence of CP-violating neutrino non-standard interactions in the oscillation data. We first show how to very simply approximate the expected NSI parameters to resolve differences between two long-baseline appearance experiments analytically. Then, by combining recent NOvA and T2K data, we find a tantalizing hint of CP-violating NSI preferring a new complex phase that is close to maximal: $\phi_{e\mu}$ or $\phi_{e\tau}\approx3\pi/2$ with $|\epsilon_{e\mu}|$ or $|\epsilon_{e\tau}|\sim0.2$. We then compare the results from long-baseline data to constraints from IceCube and COHERENT.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Tracing Neutrino Non-Standard Interactions through Charged Lepton Collisions

    hep-ph 2025-07 conditional novelty 6.0 of 10

    Future lepton colliders could probe neutrino-electron non-standard interactions down to coupling strengths of about 0.02% to 0.7%, depending on the machine.

  2. Neutrino NSI in archaeological Pb

    hep-ph 2026-02 conditional novelty 5.0 of 10

    RES-NOVA with a 0.1 keV threshold and 1 ton·yr exposure could probe neutrino non-standard interactions beyond current global constraints, especially in the eτ sector.

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