Using the movable IWCD near detector at Hyper-Kamiokande, the NCQE-to-CCQE event ratio sampled at three off-axis angles can constrain axial and vector neutrino non-standard interactions at the 0.05 to 0.12 level, breaking degeneracies that a fixed spectrum cannot.
A combined study of source, detector and matter non-standard neutrino interactions at DUNE
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abstract
We simultaneously investigate source, detector and matter non-standard neutrino interactions at the proposed DUNE experiment. Our analysis is performed using a Markov Chain Monte Carlo exploring the full parameter space. We find that the sensitivity of DUNE to the standard oscillation parameters is worsened due to the presence of non-standard neutrino interactions. In particular, there are degenerate solutions in the leptonic mixing angle $\theta_{23}$ and the Dirac CP-violating phase $\delta$. We also compute the expected sensitivities at DUNE to the non-standard interaction parameters. We find that the sensitivities to the matter non-standard interaction parameters are substantially stronger than the current bounds (up to a factor of about 15). Furthermore, we discuss correlations between the source/detector and matter non-standard interaction parameters and find a degenerate solution in $\theta_{23}$. Finally, we explore the effect of statistics on our results.
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Moving a Detector to Probe New Neutrino Interactions: IWCD at Hyper-Kamiokande
Using the movable IWCD near detector at Hyper-Kamiokande, the NCQE-to-CCQE event ratio sampled at three off-axis angles can constrain axial and vector neutrino non-standard interactions at the 0.05 to 0.12 level, breaking degeneracies that a fixed spectrum cannot.