Searches for new physics at the Hyper-Kamiokande experiment

Abstract

We investigate the ability of the upcoming Hyper-Kamiokande (Hyper-K) neutrino experiment to detect new physics phenomena beyond the standard, three-massive-neutrinos paradigm; namely the existence of a fourth, sterile neutrino or weaker-than-weak, non-standard neutrino interactions. With both beam-based neutrinos from the Japan Proton Accelerator Research Complex (J-PARC) and atmospheric neutrinos, Hyper-K is capable of exploring new ranges of parameter space in these new-physics scenarios. We find that Hyper-K has comparable capability to the upcoming Deep Underground Neutrino Experiment (DUNE), and that combining both beam- and atmospheric-based data can clear up degeneracies in the parameter spaces of interest. We also comment on the potential improvement in searches for new physics if a combined analysis were performed using Hyper-K and DUNE data.

14 pages, 8 figures. Minor changes to results; matches published version

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Cited by in corpus (22)

• Where Are We With Light Sterile Neutrinos?
• White Paper on New Opportunities at the Next-Generation Neutrino Experiments (Part 1: BSM Neutrino Physics and Dark Matter)
• Current and Future Neutrino Oscillation Constraints on Leptonic Unitarity
• Imprints of a light Sterile Neutrino at DUNE, T2HK and T2HKK
• Correlations and degeneracies among the NSI parameters with tunable beams at DUNE
• How to Identify Different New Neutrino Oscillation Physics Scenarios at DUNE
• Measuring the Sterile Neutrino CP Phase at DUNE and T2HK
• Neutrino vs. Antineutrino Oscillation Parameters at DUNE and Hyper-Kamiokande
• Probing Direct and Indirect Unitarity Violation in Future Accelerator Neutrino Facilities
• Leptonic Unitarity Triangles
• Exploring the Potential of Short-Baseline Physics at Fermilab
• Model-Independent Constraints on Non-Unitary Neutrino Mixing from High-Precision Long-Baseline Experiments
• Constraining Sterile Neutrino Cosmology with Terrestrial Oscillation Experiments
• The Effect of a Light Sterile Neutrino at NO$\nu$A and DUNE
• Very Light Sterile Neutrinos at NOvA and T2K
• Sensitivities of future reactor and long-baseline neutrino experiments to NSI
• Study of parameter degeneracy and hierarchy sensitivity of NO$\nu$A in presence of sterile neutrino
• Prospects of light sterile neutrino searches in long-baseline neutrino oscillations
• Non-Unitarity at DUNE and T2HK with Charged and Neutral Current Measurements
• Exploring fake solutions in the sterile neutrino sector at long-baseline experiments
• Exploring the new physics phases in 3+1 scenario in neutrino oscillation experiments
• Sensitivity of Hyper-Kamiokande to sub-eV Sterile Neutrinos