Nonstandard neutrino interactions at DUNE, T2HK and T2HKK

Abstract

We study the matter effect caused by nonstandard neutrino interactions (NSI) in the next generation long-baseline neutrino experiments, DUNE, T2HK and T2HKK. If multiple NSI parameters are nonzero, the potential of these experiments to detect CP violation, determine the mass hierarchy and constrain NSI is severely impaired by degeneracies between the NSI parameters and by the generalized mass hierarchy degeneracy. In particular, a cancellation between leading order terms in the appearance channels when ${\epsilon }_{e\tau }=\cot {\theta }_{23}{\epsilon }_{e\mu }$, strongly affects the sensitivities to these two NSI parameters at T2HK and T2HKK. We also study the dependence of the sensitivities on the true CP phase $\delta$ and the true mass hierarchy, and find that overall DUNE has the best sensitivity to the magnitude of the NSI parameters, while T2HKK has the best sensitivity to CP violation whether or not there are NSI. Furthermore, for T2HKK a smaller off-axis angle for the Korean detector is better overall. We find that due to the structure of the leading order terms in the appearance channel probabilities, the NSI sensitivities in a given experiment are similar for both mass hierarchies, modulo the phase change $\delta \to \delta +180^{\circ }$.

38 pages, 19 figures, 1 table

References in corpus (7)

• Updated fit to three neutrino mixing: status of leptonic CP violation
• Status of non-standard neutrino interactions
• General bounds on non-standard neutrino interactions
• Degeneracy between ${\theta }_{23}$ octant and neutrino non-standard interactions at DUNE
• Perturbation Theory of Neutrino Oscillation with Nonstandard Neutrino Interactions
• Shedding light on LMA-Dark solar neutrino solution by medium baseline reactor experiments: JUNO and RENO-50
• Effects of non-standard interactions in the MINOS experiment

Cited by in corpus (18)

• Snowmass White Paper: Beyond the Standard Model effects on Neutrino Flavor
• On the Determination of Leptonic CP Violation and Neutrino Mass Ordering in Presence of Non-Standard Interactions: Present Status
• Nonstandard neutrino interactions at COHERENT, DUNE, T2HK and LHC
• The $\mu$-$\tau$ reflection symmetry of Majorana neutrinos
• A Direct Detection View of the Neutrino NSI Landscape
• Imprints of scalar NSI on the CP-violation sensitivity using synergy among DUNE, T2HK and T2HKK
• Probing nonstandard lepton number violating interactions in neutrino oscillations
• Distinguishing Non-Standard Interaction and Lorentz Invariance Violation at Protvino to Super-ORCA experiment
• Optimal configuration of Protvino to ORCA experiment for hierarchy and non-standard interactions
• A hybrid setup for fundamental unknowns in neutrino oscillations using T2HK ($\nu$) and $\mu$-DAR ($\bar{\nu }$)
• Impact of scalar NSI on the neutrino mass ordering sensitivity at DUNE, HK and KNO
• Neutrino Non-standard Interactions with arbitrary couplings to u and d quarks
• Effects of the Violation of the Equivalence Principle at DUNE
• Constraining nonstandard neutrino interactions at electron colliders
• The effect of non-standard interactions and environmental decoherence at DUNE
• Towards First Detection of the Solar MSW Transition With JUNO
• New sources of leptonic CP violation at the DUNE neutrino experiment
• The Sensitivity of DUNE in Presence of Off-Diagonal Scalar NSI Parameters