A Long Baseline Neutrino Oscillation Experiment Using J-PARC Neutrino Beam and Hyper-Kamiokande

By H. Abe, H. Aihara, C. Andreopoulos, I. Anghel, A. Ariga, T. Ariga, R. Asfandiyarov, M. Askins, J. Back, P. Ballett and 236 more. 2014

328 citations recorded by the source corpus.

Hyper-Kamiokande will be a next generation underground water Cherenkov detector with a total (fiducial) mass of 0.99 (0.56) million metric tons, approximately 20 (25) times larger than that of Super-Kamiokande. One of the main goals of Hyper-Kamiokande is the study of $CP$ asymmetry in the lepton sector using accelerator neutrino and anti-neutrino beams. In this document, the physics potential of a long baseline neutrino experiment using the Hyper-Kamiokande detector and a neutrino beam from the J-PARC proton synchrotron is presented. The analysis has been updated from the previous Letter of Intent [K. Abe et al., arXiv:1109.3262 [hep-ex]], based on the experience gained from the ongoing T2K experiment. With a total exposure of 7.5 MW $\times$ 10$^7$ sec integrated proton beam power (corresponding to $1.56\times10^{22}$ protons on target with a 30 GeV proton beam) to a $2.5$-degree off-axis neutrino beam produced by the J-PARC proton synchrotron, it is expected that the $CP$ phase $\delta_{CP}$ can be determined to better than 19 degrees for all possible values of $\delta_{CP}$, and $CP$ violation can be established with a statistical significance of more than $3\,\sigma$ ($5\,\sigma$) for $76%$ ($58%$) of the $\delta_{CP}$ parameter space.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/b303e00a9d7bd7187206bc88861b54eb022af0ae

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Citations in the corpus

WIMP dark matter candidates and searches—current status and future prospects (2017, methodology): “ (BAKSAN [413]) and water Cherenkov detectors (ANTARES, IceCube, SuperK).14 The latter technology will also be used in planned neutrino telescopes, e.g., BAIKAL-GVD [416], IceCube-PINGU [417], HyperK [418] and KM3Net [419]. The most important background in searches for DM-induced neutrinos originate”
Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Cosmological implications from two decades of spectroscopic surveys at the Apache Point Observatory (2020, background): “Resolving the hierarchy problem remains a key goal of ground-based neutrino experiments (e.g., Li et al. 2013; Akhmedov et al. 2013; Abe et al. 2015).”