Physics potential of a long-baseline neutrino oscillation experiment using a J-PARC neutrino beam and Hyper-Kamiokande



Abe, K, Aihara, H, Andreopoulos, Constantinos ORCID: 0000-0003-2020-8215, Anghel, I, Ariga, A, Ariga, T, Asfandiyarov, R, Askins, M, Back, JJ, Ballett, P
et al (show 238 more authors) (2015) Physics potential of a long-baseline neutrino oscillation experiment using a J-PARC neutrino beam and Hyper-Kamiokande. Progress of Theoretical and Experimental Physics, 2015 (5).

[img] Text
1502.05199v2.pdf
Available under License : See the attached licence file.

Download (4MB) | Preview
[img] PDF (licence)
repository-policy-2016-03-31.pdf
Available under License : See the attached licence file.

Download (77kB) | Preview

Abstract

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 paper, 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 uses the framework and systematic uncertainties derived from the ongoing T2K experiment. With a total exposure of 7.5 MW ×107s integrated proton beam power (corresponding to 1.56×1022 protons on target with a 30 GeV proton beam) to a 2.5∘ off-axis neutrino beam, it is expected that the leptonic CP phase δCP can be determined to better than 19 degrees for all possible values of δCP, and CP violation can be established with a statistical significance of more than 3σ (5σ) for 76% (58%) of the δCP parameter space. Using both νe appearance and νμ disappearance data, the expected 1σ uncertainty of sin2θ23 is 0.015(0.006) for sin2θ23=0.5(0.45).

Item Type: Article
Uncontrolled Keywords: C03 CP violation, C04 Neutrino masses, mixing, and oscillations, C32 Experiments using neutrino beams
Depositing User: Symplectic Admin
Date Deposited: 05 Apr 2016 10:08
Last Modified: 22 Nov 2020 00:14
DOI: 10.1093/ptep/ptv061
Related URLs:
URI: http://livrepository.liverpool.ac.uk/id/eprint/3000003