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

Authors

K. Abe, The University of Tokyo
H. Aihara, The University of Tokyo
C. Andreopoulos, University of Liverpool
I. Anghel, Iowa State University
A. Ariga, University of Bern
T. Ariga, University of Bern
R. Asfandiyarov, Université de Genève
M. Askins, University of California, Davis
J. J. Back, University of Warwick
P. Ballett, Durham University
M. Barbi, University of Regina
G. J. Barker, University of Warwick
G. Barr, University of Oxford
F. Bay, ETH Zürich
P. Beltrame, The University of Edinburgh
V. Berardi, Politecnico di Bari
M. Bergevin, University of California, Davis
S. Berkman, The University of British Columbia
T. Berry, Royal Holloway, University of London
S. Bhadra, York University
F. D.M. Blaszczyk, Louisiana State University
A. Blondel, Université de Genève
S. Bolognesi, Institut de Recherche sur les Lois Fondamentales de l'Univers
S. B. Boyd, University of Warwick
A. Bravar, Université de Genève
C. Bronner, The University of Tokyo
F. S. Cafagna, Politecnico di Bari
G. Carminati, University of California, Irvine

Document Type

Article

Publication Date

1-1-2015

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 7.5MW ×107s integrated proton beam power (corresponding to 1.56 × 1022protons on target with a 30 GeV proton beam) to a 2.5° off-axis neutrino beam, it is expected that the leptonic CP phase δCPcan 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 3 σ (5 σ) for 76% (58%) of the δCPparameter space. Using both νeappearance and νμ disappearance data, the expected 1 σ uncertainty of sin2Θ23is 0.015(0.006) for sin2Θ23= 0.5(0.45).

Publication Source (Journal or Book title)

Progress of Theoretical and Experimental Physics

Recommended Citation

Abe, K., Aihara, H., Andreopoulos, C., Anghel, I., Ariga, A., Ariga, T., Asfandiyarov, R., Askins, M., Back, J., Ballett, P., Barbi, M., Barker, G., Barr, G., Bay, F., Beltrame, P., Berardi, V., Bergevin, M., Berkman, S., Berry, T., Bhadra, S., Blaszczyk, F., Blondel, A., Bolognesi, S., Boyd, S., Bravar, A., Bronner, C., Cafagna, F., & Carminati, G. (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) https://doi.org/10.1093/ptep/ptv061