Abstract

Hyper-Kamiokande consists of two identical water-Cherenkov detectors of total 520 kt, with the first one in Japan at 295 km from the J-PARC neutrino beam with 2.5$^\circ$ off-axis angles (OAAs), and the second one possibly in Korea at a later stage. Having the second detector in Korea would benefit almost all areas of neutrino oscillation physics, mainly due to longer baselines. There are several candidate sites in Korea with baselines of 1000–1300 km and OAAs of 1$^\circ$–3$^\circ$.

We conducted sensitivity studies on neutrino oscillation physics for a second detector, either in Japan (JD $\times$ 2) or Korea (JD + KD), and compared the results with a single detector in Japan. Leptonic charge–parity (CP) symmetry violation sensitivity is improved, especially when the CP is non-maximally violated. The larger matter effect at Korean candidate sites significantly enhances sensitivities to non-standard interactions of neutrinos and mass ordering determination. Current studies indicate the best sensitivity is obtained at Mt. Bisul (1088 km baseline, $1.3^\circ$ OAA). Thanks to a larger (1000 m) overburden than the first detector site, clear improvements to sensitivities for solar and supernova relic neutrino searches are expected.

Details

Title
Physics potentials with the second Hyper-Kamiokande detector in Korea
Author
Abe, K 1 ; Abe, Ke 2 ; Ahn, S H 3 ; Aihara, H 4 ; Aimi, A 5 ; Akutsu, R 6 ; Andreopoulos, C 7 ; Anghel, I 8 ; Anthony, L H V 9 ; Antonova, M 10 ; Ashida, Y 11 ; Aushev, V 12 ; Barbi, M 13 ; Barker, G J 14 ; Barr, G 15 ; Beltrame, P 16 ; Berardi, V 17 ; Bergevin, M 18 ; Berkman, S 19 ; Berns, L 20 ; Berry, T 21 ; Bhadra, S 22 ; Blaszczyk, F d M 23 ; Blondel, A 24 ; Bolognesi, S 25 ; Boyd, S B 14 ; Bravar, A 24 ; Bronner, C 26 ; M Buizza Avanzini 27 ; Cafagna, F S 17 ; Calland, R 26 ; Cao, S 28 ; Cartwright, S L 29 ; Catanesi, M G 17 ; Checchia, C 5 ; Chen-Wishart, Z 21 ; Cheon, B G 30 ; Cheoun, M K 31 ; Cho, K 32 ; Choi, J H 33 ; Choi, K 34 ; Choi, K Y 35 ; Chun, E J 36 ; Cole, A 29 ; Coleman, J 9 ; Collazuol, G 5 ; Cowan, G 16 ; Cremonesi, L 37 ; Dealtry, T 38 ; De Rosa, G 39 ; Densham, C 40 ; Dewhurst, D 15 ; Drakopoulou, E 16 ; F Di Lodovico 37 ; Drapier, O 27 ; Dumarchez, J 41 ; Dunne, P 42 ; Dziewiecki, M 43 ; Emery, S 25 ; Esmaili, A 44 ; Evangelisti, A 39 ; Fernández-Martinez, E 45 ; Feusels, T 19 ; Finch, A 38 ; Fiorentini, G A 22 ; Fiorillo, G 39 ; Fitton, M 40 ; Frankiewicz, K 46 ; Friend, M 28 ; Fujii, Y 28 ; Fukuda, Y 47 ; Fukuda, D 48 ; Ganezer, K 49 ; Ghosh, M 50 ; Giganti, C 41 ; Gonin, M 27 ; Grant, N 14 ; Gumplinger, P 51 ; Hadley, D R 14 ; Hartfiel, B 49 ; Hartz, M 52 ; Hayato, Y 1 ; Hayrapetyan, K 37 ; Hill, J 49 ; Hirota, S 11 ; Horiuchi, S 53 ; Ichikawa, A K 11 ; Iijima, T 54 ; Ikeda, M 55 ; Imber, J 27 ; Inoue, K 56 ; Insler, J 57 ; Intonti, R A 17 ; Ioannisian, A 58 ; Ishida, T 28 ; Ishino, H 48 ; Ishitsuka, M 59 ; Itow, Y 60 ; Iwamoto, K 61 ; Izmaylov, A 10 ; Jamieson, B 62 ; Jang, H I 63 ; Jang, J S 64 ; Jeon, S H 35 ; Jeong, K S 65 ; Jiang, M 11 ; Jonsson, P 42 ; Joo, K K 66 ; Kaboth, A 67 ; Kachulis, C 23 ; Kajita, T 68 ; Kang, S K 69 ; Kameda, J 1 ; Kataoka, Y 61 ; Katori, T 37 ; Kayrapetyan, K 37 ; Kearns, E 70 ; Khabibullin, M 10 ; Khotjantsev, A 10 ; Kim, C S 71 ; Kim, H B 30 ; Kim, H J 72 ; Kim, J H 35 ; J-S, Kim 3 ; Kim, J Y 66 ; Kim, S B 73 ; 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 University of Tokyo, Institute for Cosmic Ray Research, Kamioka Observatory, Kamioka, Japan; University of Tokyo, Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, Kashiwa, Chiba, Japan 
 Kobe University, Department of Physics, Kobe, Japan 
 Korea Astronomy and Space Science Institute, Daejeon 34055, Korea 
 University of Tokyo, Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, Kashiwa, Chiba, Japan; University of Tokyo, Department of Physics, Tokyo, Japan 
 INFN Sezione di Padova and Università di Padova, Dipartimento di Fisica, Padova, Italy 
 University of Tokyo, Institute for Cosmic Ray Research, Research Center for Cosmic Neutrinos, Kashiwa, Japan 
 University of Liverpool, Department of Physics, Liverpool, United Kingdom; STFC, Rutherford Appleton Laboratory, Harwell Oxford, and Daresbury Laboratory, Warrington, United Kingdom 
 Iowa State University, Department of Physics and Astronomy, Ames, Iowa, U.S.A. 
 University of Liverpool, Department of Physics, Liverpool, United Kingdom 
10  Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia 
11  Kyoto University, Department of Physics, Kyoto, Japan 
12  Kyiv National University, Department of Nuclear Physics, Kyiv, Ukraine 
13  University of Regina, Department of Physics, Regina, Saskatchewan, Canada 
14  University of Warwick, Department of Physics, Coventry, United Kingdom 
15  Oxford University, Department of Physics, Oxford, United Kingdom 
16  University of Edinburgh, School of Physics and Astronomy, Edinburgh, United Kingdom 
17  INFN Sezione di Bari and Università e Politecnico di Bari, Dipartimento Interuniversitario di Fisica, Bari, Italy 
18  University of California, Davis, Department of Physics, Davis, California, U.S.A. 
19  University of British Columbia, Department of Physics and Astronomy, Vancouver, British Columbia, Canada 
20  Tokyo Institute of Technology, Department of Physics, Tokyo, Japan 
21  Royal Holloway University of London, Department of Physics, Egham, Surrey, United Kingdom 
22  York University, Department of Physics and Astronomy, Toronto, Ontario, Canada 
23  Boston University, Department of Physics, Boston, Massachusetts, U.S.A. 
24  University of Geneva, Section de Physique, DPNC, Geneva, Switzerland 
25  IRFU, CEA Saclay, Gif-sur-Yvette, France 
26  University of Tokyo, Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, Kashiwa, Chiba, Japan 
27  Ecole Polytechnique, IN2P3-CNRS, Laboratoire Leprince-Ringuet, Palaiseau, France 
28  High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki, Japan 
29  University of Sheffield, Department of Physics and Astronomy, Sheffield, United Kingdom 
30  Hanyang University, Department of Physics, Seoul 04763, Korea 
31  Soongsil University, Origin of Matter and Evolution of Galaxy (OMEG) Institute and Department of Physics, Seoul 156-743, Korea 
32  Korea Institute of Science and Technology Information, Daejeon 34141, Korea 
33  Dongshin University, Department of Physics, Naju, Korea 
34  University of Hawaii, Department of Physics and Astronomy, Honolulu, Hawaii, U.S.A. 
35  Sungkyunkwan University, Department of Physics,Suwon 16419, Korea 
36  Korean Institute for Advanced Studies, Seoul, Korea 
37  Queen Mary University of London, School of Physics and Astronomy, London, United Kingdom 
38  Lancaster University, Physics Department, Lancaster, United Kingdom 
39  INFN Sezione di Napoli and Università di Napoli, Dipartimento di Fisica, Napoli, Italy 
40  STFC, Rutherford Appleton Laboratory, Harwell Oxford, and Daresbury Laboratory, Warrington, United Kingdom 
41  Laboratoire de Physique Nucleaire et de Hautes Energies, UPMC and Universite Paris-Diderot and CNRS/IN2P3, Paris, France 
42  Imperial College London, Department of Physics, London, United Kingdom 
43  Warsaw University of Technology, Institute of Radioelectronics and Multimedia Technology, Warsaw, Poland 
44  Pontifícia Universidade Católica do Rio de Janeiro, Departamento de Física, Rio de Janeiro, Brazil 
45  University Autonoma Madrid, Department of Theoretical Physics, Madrid, Spain; Instituto de Física Teórica, UAM/CSIC, Madrid, Spain 
46  National Centre for Nuclear Research, Warsaw, Poland 
47  Miyagi University of Education, Department of Physics, Sendai, Japan 
48  Okayama University, Department of Physics, Okayama, Japan 
49  California State University, Department of Physics, Carson, California, U.S.A. 
50  Tokyo Metropolitan University, Department of Physics, Tokyo, Japan 
51  TRIUMF, Vancouver, British Columbia, Canada 
52  University of Tokyo, Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, Kashiwa, Chiba, Japan; TRIUMF, Vancouver, British Columbia, Canada 
53  Virginia Tech, Center for Neutrino Physics, Blacksburg, Virginia, U.S.A. 
54  Nagoya University, Graduate School of Science, Nagoya, Japan; Nagoya University, Kobayashi-Maskawa Institute for the Origin of Particles and the Universe, Nagoya, Japan 
55  University of Tokyo, Institute for Cosmic Ray Research, Kamioka Observatory, Kamioka, Japan 
56  Research Center for Neutrino Science, Tohoku University, Sendai, Japan; University of Tokyo, Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, Kashiwa, Chiba, Japan 
57  Louisiana State University, Department of Physics and Astronomy, Baton Rouge, Louisiana, U.S.A. 
58  Yerevan Institute for Theoretical Physics and Modeling, Halabian Str. 34; Yerevan 0036, Armenia 
59  Tokyo University of Science, Department of Physics, Chiba, Japan 
60  Nagoya University, Kobayashi-Maskawa Institute for the Origin of Particles and the Universe, Nagoya, Japan; Nagoya University, Solar-Terrestrial Environment Laboratory, Nagoya, Japan 
61  University of Tokyo, Department of Physics, Tokyo, Japan 
62  University of Winnipeg, Department of Physics, Winnipeg, Manitoba, Canada 
63  Seoyeong University, Department of Fire Safety, Gwangju, Korea 
64  GIST College, Gwangju Institute of Science and Technology, Gwangju 500-712, Korea 
65  Pusan National University, Department of Physics, Busan 46241, Korea 
66  Chonnam National University, Department of Physics, Gwangju, Korea 
67  STFC, Rutherford Appleton Laboratory, Harwell Oxford, and Daresbury Laboratory, Warrington, United Kingdom; Royal Holloway University of London, Department of Physics, Egham, Surrey, United Kingdom 
68  University of Tokyo, Institute for Cosmic Ray Research, Research Center for Cosmic Neutrinos, Kashiwa, Japan; University of Tokyo, Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, Kashiwa, Chiba, Japan 
69  Seoul National University of Science and Technology, School of Liberal Arts, Seoul 01811, Korea 
70  Boston University, Department of Physics, Boston, Massachusetts, U.S.A.; University of Tokyo, Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, Kashiwa, Chiba, Japan 
71  Yonsei University, Department of Physics and IPAP, Seoul 03722, Korea 
72  Kyungpook National University, Department of Physics, Daegu 41566, Korea 
73  Seoul National University, Department of Physics and Astronomy, Seoul 08826, Korea 
74  Korea Astronomy and Space Science Institute, Daejeon 34055, Korea; Korea University of Science and Technology, Daejeon 34113, Korea 
75  Okayama University, Department of Physics, Okayama, Japan; University of Tokyo, Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, Kashiwa, Chiba, Japan 
76  University of California, Irvine, Department of Physics and Astronomy, Irvine, California, U.S.A. 
77  Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia; National Research Nuclear University (MEPhI), Moscow, Russia; Moscow Institute of Physics and Technology, Moscow region, Russia 
78  UNIST, Department of Physics, Ulsan, Korea 
79  University Autonoma Madrid, Department of Theoretical Physics, Madrid, Spain 
80  Korea University, Department of Physics, Seoul 02841, Korea 
81  INFN Sezione di Roma, Roma, Italy 
82  Michigan State University, Department of Physics and Astronomy, East Lansing, Michigan, U.S.A. 
83  University of Toronto, Department of Physics, Toronto, Ontario, Canada 
84  University of Rochester, Department of Physics and Astronomy, Rochester, New York, U.S.A. 
85  State University of New York at Stony Brook, Department of Physics and Astronomy, Stony Brook, New York, U.S.A. 
86  University of Tokyo, Institute for Cosmic Ray Research, Research Center for Cosmic Neutrinos, Kashiwa, Japan; Instituto de Física Teórica, UAM/CSIC, Madrid, Spain 
87  Yokohama National University, Faculty of Engineering, Yokohama, Japan 
88  Pennsylvania State University, Department of Physics, University Park, PA 16802, U.S.A. 
89  Nagoya University, Graduate School of Science, Nagoya, Japan 
90  High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki, Japan; University of Tokyo, Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, Kashiwa, Chiba, Japan 
91  Kyoto University, Department of Physics, Kyoto, Japan; University of Tokyo, Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, Kashiwa, Chiba, Japan 
92  Stockholm University, Oskar Klein Centre and Department of Physics, Stockholm, Sweden 
93  University of Pittsburgh, Department of Physics and Astronomy, Pittsburgh, Pennsylvania, U.S.A. 
94  Chungnam National University, Department of Physics, Daejeon 34134, Korea 
95  Kyungpook National University, Department of Astronomy and Atmospheric Sciences, Daegu 41566, Korea 
96  University of Warsaw, Faculty of Physics, Warsaw, Poland 
97  Osaka City University, Department of Physics, Osaka, Japan 
98  Research Center for Neutrino Science, Tohoku University, Sendai, Japan 
99  Imperial College London, Department of Physics, London, United Kingdom; Royal Holloway University of London, Department of Physics, Egham, Surrey, United Kingdom 
100  Oxford University, Department of Physics, Oxford, United Kingdom; University of Tokyo, Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, Kashiwa, Chiba, Japan 
101  Los Alamos National Laboratory, New Mexico, U.S.A. 
102  University of California, Irvine, Department of Physics and Astronomy, Irvine, California, U.S.A.; University of Tokyo, Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, Kashiwa, Chiba, Japan 
103  Wroclaw University, Faculty of Physics and Astronomy, Wroclaw, Poland 
104  Kyoto University, Yukawa Institute for Theoretical Physics, Kyoto, Japan 
105  University of Edinburgh, School of Physics and Astronomy, Edinburgh, United Kingdom; Nagoya University, Graduate School of Science, Nagoya, Japan 
106  University of Tokyo, Earthquake Research Institute, Tokyo, Japan 
107  Kobe University, Department of Physics, Kobe, Japan; University of Tokyo, Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, Kashiwa, Chiba, Japan 
108  Oxford University, Department of Physics, Oxford, United Kingdom; STFC, Rutherford Appleton Laboratory, Harwell Oxford, and Daresbury Laboratory, Warrington, United Kingdom 
109  University of Washington, Department of Physics, Seattle, Washington, U.S.A. 
110  Korea Advanced Institute of Science and Technology (KAIST), Department of Physics, Daejeon 34141, Korea 
Publication year
2018
Publication date
Jun 2018
Publisher
Oxford University Press
e-ISSN
20503911
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
3171480183
Copyright
© The Author(s) 2018. Published by Oxford University Press on behalf of the Physical Society of Japan. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.