Physics Potential of a Long Baseline Neutrino Oscillation Experiment Using J-PARC Neutrino Beam and Hyper-Kamiokande
Hyper-Kamiokande Proto-Collaboraion, :, K. Abe, H. Aihara, C. Andreopoulos, I. Anghel, A. Ariga, T. Ariga, R. Asfandiyarov, M. Askins, J. J. Back, P. Ballett, M… 展开作者
Hyper-Kamiokande Proto-Collaboraion, :, K. Abe, H. Aihara, C. Andreopoulos, I. Anghel, A. Ariga, T. Ariga, R. Asfandiyarov, M. Askins, J. J. Back, P. Ballett, M. Barbi, G. J. Barker, G. Barr, F. Bay, P. Beltrame, V. Berardi, M. Bergevin, S. Berkman, T. Berry, S. Bhadra, F. d. M. Blaszczyk, A. Blondel, S. Bolognesi, S. B. Boyd, A. Bravar, C. Bronner, F. S. Cafagna, G. Carminati, S. L. Cartwright, M. G. Catanesi, K. Choi, J. H. Choi, G. Collazuol, G. Cowan, L. Cremonesi, G. Davies, G. De Rosa, C. Densham, J. Detwiler, D. Dewhurst, F. Di Lodovico, S. Di Luise, O. Drapier, S. Emery, A. Ereditato, P. Fernández, T. Feusels, A. Finch, M. Fitton, M. Friend, Y. Fujii, Y. Fukuda, D. Fukuda, V. Galymov, K. Ganezer, M. Gonin, P. Gumplinger, D. R. Hadley, L. Haegel, A. Haesler, Y. Haga, B. Hartfiel, M. Hartz, Y. Hayato, M. Hierholzer, J. Hill, A. Himmel, S. Hirota, S. Horiuchi, K. Huang, A. K. Ichikawa, T. Iijima, M. Ikeda, J. Imber, K. Inoue, J. Insler, R. A. Intonti, T. Irvine, T. Ishida, H. Ishino, M. Ishitsuka, Y. Itow, A. Izmaylov, B. Jamieson, H. I. Jang, M. Jiang, K. K. Joo, C. K. Jung, A. Kaboth, T. Kajita, J. Kameda, Y. Karadhzov, T. Katori, E. Kearns, M. Khabibullin, A. Khotjantsev, J. Y. Kim, S. B. Kim, Y. Kishimoto, T. Kobayashi, M. Koga, A. Konaka, L. L. Kormos, A. Korzenev, Y. Koshio, W. R. Kropp, Y. Kudenko, T. Kutter, M. Kuze, L. Labarga, J. Lagoda, M. Laveder, M. Lawe, J. G. Learned, I. T. Lim, T. Lindner, A. Longhin, L. Ludovici, W. Ma, L. Magaletti, K. Mahn, M. Malek, C. Mariani, L. Marti, J. F. Martin, C. Martin, P. P. J. Martins, E. Mazzucato, N. McCauley, K. S. McFarland, C. McGrew, M. Mezzetto, H. Minakata, A. Minamino, S. Mine, O. Mineev, M. Miura, J. Monroe, T. Mori, S. Moriyama, T. Mueller, F. Muheim, M. Nakahata, K. Nakamura, T. Nakaya, S. Nakayama, M. Needham, T. Nicholls, M. Nirkko, Y. Nishimura, E. Noah, J. Nowak, H. Nunokawa, H. M. O'Keeffe, Y. Okajima, K. Okumura, S. M. Oser, E. O'Sullivan, T. Ovsiannikova, R. A. Owen, Y. Oyama, J. Pérez, M. Y. Pac, V. Palladino, J. L. Palomino, V. Paolone, D. Payne, O. Perevozchikov, J. D. Perkin, C. Pistillo, S. Playfer, M. Posiadala-Zezula, J. -M. Poutissou, B. Quilain, M. Quinto, E. Radicioni, P. N. Ratoff, M. Ravonel, M. A. Rayner, A. Redij, F. Retiere, C. Riccio, E. Richard, E. Rondio, H. J. Rose, M. Ross-Lonergan, C. Rott, S. D. Rountree, A. Rubbia, R. Sacco, M. Sakuda, M. C. Sanchez, E. Scantamburlo, K. Scholberg, M. Scott, Y. Seiya, T. Sekiguchi, H. Sekiya, A. Shaikhiev, I. Shimizu, M. Shiozawa, S. Short, G. Sinnis, M. B. Smy, J. Sobczyk, H. W. Sobel, T. Stewart, J. L. Stone, Y. Suda, Y. Suzuki, A. T. Suzuki, R. Svoboda, R. Tacik, A. Takeda, A. Taketa, Y. Takeuchi, H. A. Tanaka, H. K. M. Tanaka, H. Tanaka, R. Terri, L. F. Thompson, M. Thorpe, S. Tobayama, N. Tolich, T. Tomura, C. Touramanis, T. Tsukamoto, M. Tzanov, Y. Uchida, M. R. Vagins, G. Vasseur, R. B. Vogelaar, C. W. Walter, D. Wark, M. O. Wascko, A. Weber, R. Wendell, R. J. Wilkes, M. J. Wilking, J. R. Wilson, T. Xin, K. Yamamoto, C. Yanagisawa, T. Yano, S. Yen, N. Yershov, M. Yokoyama, M. Zito
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 $\times$ 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, it is expected that the leptonic $CP$ phase $δ_{CP}$ can be determined to better than 19 degrees for all possible values of $δ_{CP}$, and $CP$ violation can be established with a statistical significance of more than $3\,σ$ ($5\,σ$) for $76\%$ ($58\%$) of the $δ_{CP}$ parameter space. Using both $ν_e$ appearance and $ν_μ$ disappearance data, the expected 1$σ$ uncertainty of $\sin^2θ_{23}$ is 0.015(0.006) for $\sin^2θ_{23}=0.5(0.45)$.
Moving a Detector to Probe New Neutrino Interactions: IWCD at Hyper-Kamiokande
High Energy Accelerator Research Organization (KEK)（高能加速器研究机构）；Graduate University for Advanced Studies (SOKENDAI)（高级研究大学）；The University of Tokyo（东京大学）
Likelihood and Deep Learning Analysis of the electron neutrino event sample at Intermediate Water Cherenkov Detector (IWCD) of the Hyper-Kamiokande experiment
Excavation of a 69-m diameter and 94-m high cavern for the Hyper-Kamiokande detector
Kamioka Observatory, Institute for Cosmic Ray Research, The University of Tokyo（东京大学宇宙射线研究所神冈观测）；Mitsui Mineral Development Engineering Co., Ltd.（三井矿山开发工程株式会社）；Tokyo Electric Power Service CO., Ltd.（东京电力服务株式会社）；KAJIMA CORPORATION（鹿岛建设株式会社）
Enhancing Event Reconstruction in Hyper-Kamiokande with Machine Learning: A ResNet Implementation
Monash University（莫纳什大学）；Imperial College London（帝国理工学院）；The University of Tokyo（东京大学）；TRIUMF；Kavli Institute for the Physics and Mathematics of the Universe (WPI)（宇宙物理与数学研究所（WPI））；OzGrav: The ARC Centre of Excellence for Gravitational Wave Discovery（ARC引力波发现卓越中心）；The University of Melbourne（墨尔本大学）
