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Updated: Jun 6, 2025

Setting Limits on Supersymmetry Using Simplified Models
Published on: November 15, 2013
Search for CP-Violating Neutrino Nonstandard Interactions with the NOvA Experiment
M A Acero1, B Acharya2, P Adamson3
1<a href="https://ror.org/05mm1w714">Universidad del Atlantico</a>, Carrera 30 No. 8-49, Puerto Colombia, Atlantico, Colombia.
Abstract:
This Letter reports a search for charge-parity (CP) symmetry violating nonstandard interactions (NSI) of neutrinos with matter using the NOvA Experiment, and examines their effects on the determination of the standard oscillation parameters. Data from ν_{μ}(ν[over ¯]_{μ})→ν_{μ}(ν[over ¯]_{μ}) and ν_{μ}(ν[over ¯]_{μ})→ν_{e}(ν[over ¯]_{e}) oscillation channels are used to measure the effect of the NSI parameters ϵ_{eμ} and ϵ_{eτ}. With 90% CL the magnitudes of the NSI couplings are constrained to be |ϵ_{eμ}|≲0.3 and |ϵ_{eτ}|≲0.4. A degeneracy at |ϵ_{eτ}|≈1.8 is reported, and we observe that the presence of NSI limits sensitivity to the standard CP phase δ_{CP}.
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