Solar neutrino measurements from dark matter direct detection experiments constrain the non-standard neutrino interactions that resolve the NOvA-T2K tension and break degeneracies that future experiments like DUNE will face.
Search for $CP$-Violating Neutrino Nonstandard Interactions with the NOvA Experiment
5 Pith papers cite this work. Polarity classification is still indexing.
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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 $\nu_{\mu}(\bar{\nu}_{\mu})\rightarrow\nu_{\mu}(\bar{\nu}_{\mu})$ and $\nu_{\mu}(\bar{\nu}_{\mu})\rightarrow\nu_{e}(\bar{\nu}_{e})$ oscillation channels are used to measure the effect of the NSI parameters $\varepsilon_{e\mu}$ and $\varepsilon_{e\tau}$. With 90% CL the magnitudes of the NSI couplings are constrained to be $|\varepsilon_{e\mu}| \, \lesssim 0.3$ and $|\varepsilon_{e\tau}| \, \lesssim 0.4$. A degeneracy at $|\varepsilon_{e\tau}| \, \approx 1.8$ is reported, and we observe that the presence of NSI limits sensitivity to the standard $CP$ phase $\delta_{\tiny\text{CP}}$.
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representative citing papers
A GPU-oriented numerical framework computes 8B solar neutrino day/night fluxes at multiple underground sites with claimed O(10^-4) probability-level accuracy and up to ~8% 3D Earth-model corrections to the day-night asymmetry.
7.5-year IceCube DeepCore νμ CC data give δ_CP-free 90% CL bounds |ε_eμ|≤0.12 and |ε_eτ|≤0.18, consistent with standard interactions.
No non-standard neutrino interactions were found in 5828 atmospheric neutrino events from KM3NeT/ORCA6, yielding 90% CL limits on four NSI coupling parameters.
T2K and NOνA extract only a small fraction of the quantum information about δ_CP, with extraction efficiency particularly suppressed near maximal CP violation.
citing papers explorer
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Direct Detection of Solar Neutrinos to Probe Tensions and Break Degeneracies in Long-Baseline Neutrino Experiments
Solar neutrino measurements from dark matter direct detection experiments constrain the non-standard neutrino interactions that resolve the NOvA-T2K tension and break degeneracies that future experiments like DUNE will face.
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A High-Precision Numerical Framework for Time-Varying Solar Neutrino Flux with Full Earth Matter Oscillation Corrections for Global Underground Laboratories
A GPU-oriented numerical framework computes 8B solar neutrino day/night fluxes at multiple underground sites with claimed O(10^-4) probability-level accuracy and up to ~8% 3D Earth-model corrections to the day-night asymmetry.
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$\delta_{CP}$-free constraints on NSI parameters $\varepsilon_{e\mu}$ and $\varepsilon_{e\tau}$ using high-purity $\nu_\mu$ CC events at IceCube DeepCore
7.5-year IceCube DeepCore νμ CC data give δ_CP-free 90% CL bounds |ε_eμ|≤0.12 and |ε_eτ|≤0.18, consistent with standard interactions.
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Search for non-standard neutrino interactions with the first six detection units of KM3NeT/ORCA
No non-standard neutrino interactions were found in 5828 atmospheric neutrino events from KM3NeT/ORCA6, yielding 90% CL limits on four NSI coupling parameters.
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Leptonic CP Phase Determination from Fisher Information in NO$\nu$A and T2K
T2K and NOνA extract only a small fraction of the quantum information about δ_CP, with extraction efficiency particularly suppressed near maximal CP violation.