학술논문
The Hyper-Kamiokande Experiment -- Snowmass LOI
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article
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Collaboration, Hyper-Kamiokande; :; Abe, K; Adrich, P; Aihara, H; Akutsu, R; Alekseev, I; Ali, A; Ameli, F; Anthony, LHV; Araya, A; Asaoka, Y; Aushev, V; Bandac, I; Barbi, M; Barr, G; Batkiewicz-Kwasniak, M; Bellato, M; Berardi, V; Bernard, L; Bernardini, E; Berns, L; Bhadra, S; Bian, J; Blanchet, A; Blondel, A; Boiano, A; Bolognesi, S; Bonavera, L; Borjabad, S; Boschi, T; Bose, D; Boyd, SB; Bozza, C; Bravar, A; Bronner, C; Bubak, A; Buchowicz, A; Avanzini, M Buizza; Cafagna, FS; Calabria, NF; Calvo-Mozota, JM; Cao, S; Catanesi, MG; Chakraborty, S; Choi, JH; Choubey, S; Cicerchia, M; Coleman, J; Collazuol, G; Cuen-Rochin, S; Danilov, M; De la Fuente, E; de Perio, P; De Rosa, G; Dealtry, T; Densham, CJ; Dergacheva, A; Deshmukh, N; Devi, MM; Di Lodovico, F; Di Meo, P; Di Palma, I; Doyle, TA; Drakopoulou, E; Drapier, O; Dumarchez, J; Eklund, L; Hedri, S El; Ellis, J; Emery, S; Esmaili, A; Fedotov, S; Feng, J; Fernández-Martinez, E; Ferrario, P; Ferrazzi, B; Finch, A; Finley, C; Fiorillo, G; Fitton, M; Friend, M; Fujii, Y; Fukuda, Y; Galinski, G; Gao, J; Garde, C; Garfagnini, A; Garode, S; Gialanella, L; Giganti, C; Gomez-Cadenas, JJ; Gonin, M; González-Nuevo, J; Gorin, A; Gornea, R; Gramegna, F; Grassi, M; Grella, G; Guigue, M
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Abstract
Hyper-Kamiokande is the next generation underground water Cherenkov detectorthat builds on the highly successful Super-Kamiokande experiment. The detectorwhich has an 8.4~times larger effective volume than its predecessor will belocated along the T2K neutrino beamline and utilize an upgraded J-PARC beamwith 2.6~times beam power. Hyper-K's low energy threshold combined with thevery large fiducial volume make the detector unique, that is expected toacquire an unprecedented exposure of 3.8~Mton$\cdot$year over a period of20~years of operation. Hyper-Kamiokande combines an extremely diverse scienceprogram including nucleon decays, long-baseline neutrino oscillations,atmospheric neutrinos, and neutrinos from astrophysical origins. The scientificscope of this program is highly complementary to liquid-argon detectors forexample in sensitivity to nucleon decay channels or supernova detection modes.Hyper-Kamiokande construction has started in early 2020 and the experiment isexpected to start operations in 2027. The Hyper-Kamiokande collaboration ispresently being formed amongst groups from 19 countries including the UnitedStates, whose community has a long history of making significant contributionsto the neutrino physics program in Japan. US physicists have played leadingroles in the Kamiokande, Super-Kamiokande, EGADS, K2K, and T2K programs.