Physics potentials with the second Hyper-Kamiokande detector in Korea

K. Abe, Ke Abe, S. H. Ahn, H. Aihara, A. Aimi, R. Akutsu, C. Andreopoulos, I. Anghel, L. H.V. Anthony, M. Antonova, Y. Ashida, V. Aushev, M. Barbi, G. J. Barker, G. Barr, P. Beltrame, V. Berardi, M. Bergevin, S. Berkman, L. BernsT. Berry, S. Bhadra, F. D.M. Blaszczyk, A. Blondel, S. Bolognesi, S. B. Boyd, A. Bravar, C. Bronner, M. Buizza Avanzini, F. S. Cafagna, R. Calland, S. Cao, S. L. Cartwright, M. G. Catanesi, C. Checchia, Z. Chen-Wishart, B. G. Cheon, M. K. Cheoun, K. Cho, J. H. Choi, K. Choi, K. Y. Choi, E. J. Chun, A. Cole, J. Coleman, G. Collazuol, G. Cowan, L. Cremonesi, T. Dealtry, G. De Rosa, C. Densham, D. Dewhurst, E. Drakopoulou, F. Di Lodovico, O. Drapier, J. Dumarchez, P. Dunne, M. Dziewiecki, S. Emery, A. Esmaili, A. Evangelisti, E. Fernández-Martinez, T. Feusels, A. Finch, G. A. Fiorentini, G. Fiorillo, M. Fitton, K. Frankiewicz, M. Friend, Y. Fujii, Y. Fukuda, D. Fukuda, K. Ganezer, M. Ghosh, C. Giganti, M. Gonin, N. Grant, P. Gumplinger, D. R. Hadley, B. Hartfiel, M. Hartz, Y. Hayato, K. Hayrapetyan, J. Hill, S. Hirota, S. Horiuchi, A. K. Ichikawa, T. Iijima, M. Ikeda, J. Imber, K. Inoue, J. Insler, R. A. Intonti, A. Ioannisian, T. Ishida, H. Ishino, M. Ishitsuka, Y. Itow, K. Iwamoto, A. Izmaylov, B. Jamieson, H. I. Jang, J. S. Jang, S. H. Jeon, K. S. Jeong, M. Jiang, P. Jonsson, K. K. Joo, A. Kaboth, C. Kachulis, T. Kajita, S. K. Kang, J. Kameda, Y. Kataoka, T. Katori, K. Kayrapetyan, E. Kearns, M. Khabibullin, A. Khotjantsev, C. S. Kim, H. B. Kim, H. J. Kim, J. H. Kim, J. S. Kim, J. Y. Kim, S. B. Kim, S. C. Kim, S. W. Kim, S. Y. Kim, T. J. Kim, W. Kim, S. King, Y. Kishimoto, P. Ko, T. Kobayashi, M. Koga, A. Konaka, L. L. Kormos, Y. Koshio, A. Korzenev, K. L. Kowalik, W. R. Kropp, Y. Kudenko, R. Kurjata, T. Kutter, M. Kuze, K. Kwak, E. H. Kwon, L. Labarga, J. Lagoda, P. J.J. Lasorak, M. Laveder, M. Lawe, J. G. Learned, C. H. Lee, S. J. Lee, W. J. Lee, I. T. Lim, T. Lindner, R. P. Litchfield, A. Longhin, P. Loverre, T. Lou, L. Ludovici, W. Ma, L. Magaletti, K. Mahn, M. Malek, L. Maret, C. Mariani, K. Martens, L. Marti, J. F. Martin, J. Marzec, S. Matsuno, E. Mazzucato, M. McCarthy, N. McCauley, K. S. McFarland, C. McGrew, A. Mefodiev, P. Mermod, C. Metelko, M. Mezzetto, J. Migenda, P. Mijakowski, H. Minakata, A. Minamino, S. Mine, O. Mineev, A. Mitra, M. Miura, T. Mochizuki, J. Monroe, C. S. Moon, D. H. Moon, S. Moriyama, T. Mueller, F. Muheim, K. Murase, F. Muto, M. Nakahata, Y. Nakajima, K. Nakamura, T. Nakaya, S. Nakayama, C. Nantais, M. Needham, T. Nicholls, Y. Nishimura, E. Noah, F. Nova, J. Nowak, H. Nunokawa, Y. Obayashi, Y. D. Oh, Y. Oh, H. M. O'Keeffe, Y. Okajima, K. Okumura, Yu Onishchuk, E. O'Sullivan, L. O'Sullivan, T. Ovsiannikova, R. A. Owen, Y. Oyama, J. Pérez, M. Y. Pac, V. Palladino, J. L. Palomino, V. Paolone, H. S. Park, J. C. Park, M. G. Park, W. Parker, S. C. Park, S. Parsa, D. Payne, J. D. Perkin, C. Pidcott, E. Pinzon Guerra, S. Playfer, B. Popov, M. Posiadala-Zezula, J. M. Poutissou, A. Pritchard, N. W. Prouse, G. Pronost, P. Przewlocki, B. Quilain, M. Quinto, E. Radicioni, P. N. Ratoff, F. Retiere, C. Riccio, B. Richards, E. Rondio, H. J. Rose, C. Rott, S. D. Rountree, A. C. Ruggeri, A. Rychter, D. Ryu, R. Sacco, M. Sakuda, M. C. Sanchez, E. Scantamburlo, M. Scott, S. Molina Sedgwick, Y. Seiya, T. Sekiguchi, H. Sekiya, H. Seo, S. H. Seo, D. Sgalaberna, R. Shah, A. Shaikhiev, I. Shimizu, M. Shiozawa, Y. Shitov, S. Short, C. Simpson, G. Sinnis, M. B. Smy, S. Snow, J. Sobczyk, H. W. Sobel, D. C. Son, Y. Sonoda, R. Spina, T. Stewart, J. L. Stone, Y. Suda, Y. Suwa, Y. Suzuki, A. T. Suzuki, R. Svoboda, M. Taani, R. Tacik, A. Takeda, A. Takenaka, A. Taketa, Y. Takeuchi, V. Takhistov, H. A. Tanaka, H. K.M. Tanaka, H. Tanaka, R. Terri, M. Thiesse, L. F. Thompson, M. Thorpe, S. Tobayama, C. Touramanis, T. Towstego, T. Tsukamoto, K. M. Tsui, M. Tzanov, Y. Uchida, M. R. Vagins, G. Vasseur, C. Vilela, R. B. Vogelaar, J. Walding, J. Walker, M. Ward, D. Wark, M. O. Wascko, A. Weber, R. Wendell, R. J. Wilkes, M. J. Wilking, J. R. Wilson, E. Won, T. Xin, K. Yamamoto, C. Yanagisawa, T. Yano, O. Yasuda, S. Yen, N. Yershov, D. N. Yeum, M. Yokoyama, H. D. Yoo, J. Yoo, S. C. Yoon, T. S. Yoon, T. Yoshida, I. Yu, M. Yu, J. Zalipska, K. Zaremba, M. Ziembicki, M. Zito, S. Zsoldos

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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° 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°-3°. We conducted sensitivity studies on neutrino oscillation physics for a second detector, either in Japan (JD × 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° 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.

Original languageEnglish
Article number063C01
JournalProgress of Theoretical and Experimental Physics
Volume2018
Issue number6
DOIs
Publication statusPublished - 2018 Jun 1

Bibliographical note

Funding Information:
This work was supported by MEXT Grant-in-Aid for Scientific Research on InnovativeAreas titled “Unification and Development of the Neutrino Science Frontier,” under Grants Nos. 25105001, 25105004, and 25105009. In addition, the participation of individual researchers has been further supported by funds from INFN (Istituto Nazionale Fisica Nucleare), Italy; JSPS, Japan; the European Union ERC-207282, H2020 RISE-GA644294-JENNIFER, and H2020 RISE-GA641540-SKPLUS; SSTF-BA1402-06, NRF grant Nos. 2009-0083526, NRF-2015R1A2A1A05001869, NRF-2016R1D1A1A02936965, NRF-2016R1D1A3B02010606, and NRF-2017R1A2B4012757 funded by the Korean government (MSIP); RSF, RFBR, and MES, Russia; JSPS and RFBR under the Japan–Russia Research Cooperative Program; the Brazilian National Council for Scientific and Technological Development (CNPq); STFC, UK. Alfred P. Sloan Foundation; USA.

Publisher Copyright:
© The Author(s) 2018.

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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