Searches for new physics at the Hyper-Kamiokande experiment

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, nonstandard neutrino interactions. With both beam-...

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Bibliographic Details
Published in:Physical review. D 2017-06, Vol.95 (11), Article 115009
Main Author: Kelly, Kevin J.
Format: Article
Language:English
Subjects:
Experiments
Neutrinos
Parameters
Physics
Proton accelerators
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Summary: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, nonstandard 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.
ISSN:2470-0010
2470-0029
DOI:10.1103/PhysRevD.95.115009