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Updated: Nov 16, 2025

Setting Limits on Supersymmetry Using Simplified Models
Published on: November 15, 2013
CP-Violating Neutrino Nonstandard Interactions in Long-Baseline-Accelerator Data
Peter B Denton1, Julia Gehrlein1, Rebekah Pestes1,2
1High Energy Theory Group, Physics Department, Brookhaven National Laboratory, Upton, New York 11973, USA.
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 nonstandard 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: ϕ_{eμ} or ϕ_{eτ}≈3π/2 with |ε_{eμ}| or |ε_{eτ}|∼0.2. We then compare the results from long-baseline data to constraints from IceCube and COHERENT.
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