A strategy document projecting Hyper-Kamiokande's 10-year sensitivity to leptonic CP violation, neutrino mass ordering, proton decay, and astrophysical neutrinos, based on simulated analyses and assumed systematic uncertainties.
Search for Lorentz and CPT violation using sidereal time dependence of neutrino flavor transitions over a short baseline
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abstract
A class of extensions of the Standard Model allows Lorentz and CPT violations, which can be identified by the observation of sidereal modulations in the neutrino interaction rate. A search for such modulations was performed using the T2K on-axis near detector. Two complementary methods were used in this study, both of which resulted in no evidence of a signal. Limits on associated Lorentz and CPT violating terms from the Standard Model Extension have been derived taking into account their correlations in this model for the first time. These results imply such symmetry violations are suppressed by a factor of more than $10^{20}$ at the GeV scale.
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The Hyper-Kamiokande experiment: input to the update of the European Strategy for Particle Physics
A strategy document projecting Hyper-Kamiokande's 10-year sensitivity to leptonic CP violation, neutrino mass ordering, proton decay, and astrophysical neutrinos, based on simulated analyses and assumed systematic uncertainties.