Physics potentials with the second Hyper-Kamiokande detector in Korea

Proto-collaboration, Hyper-Kamiokande; Abe, K.; Abe, K.; Ahn, Sung Hwan; Aihara, H.; Aimi, Andrea; Akutsu, R.; Andreopoulos, C.; Anghel, I. M.; Anthony, L. H. V.; Antonova, M.; Ashida, Yosuke; Aushev, V.; Barbi, M.; Barker, G. J.; Barr, G.; Beltrame, P.; Berardi, V.; Bergevin, M.; Berkman, S.; Berns, L.; Berry, T.; Bhadra, S.; no, D. Bravo-Bergu; Blaszczyk, F. d. M.; Blondel, A.; Bolognesi, S.; Boyd, S. B.; Bravar, A.; Bronner, C.; Avanzini, M. Buizza; Cafagna, F.; Cheon, B. G.; Cheoun, Myung-Ki; Cho, K.; Choi, Koun; Chun, Eung Jin; Cole, A. A.; Calland, R. G.; Cao, S.; Cartwright, S.; Catanesi, M G; Checchia, C.; Chen-Wishart, Z.; Choi, Jiwon; Coleman, J. P.; Collazuol, G.; Cowan, G. A.; Cremonesi, L.; Dealtry, T.; Rosa, G. De; Densham, C.; Dewhurst, D.; Drakopoulou, E.; Lodovico, F. Di; Drapier, O.; Dumarchez, J.; Dunne, P.; Dziewiecki, M.; Emery, S.; Esmaili, Arman; Evangelisti, A.; Fernández‐Martínez, E.; Feusels, T.; Finch, A. J.; Fiorentini, G. A.; Fiorillo, G.; Fitton, M.; Frankiewicz, K.; Friend, M.; Fujii, Y.; Fukuda, Y.; Fukuda, Daisuke; Ganezer, K. S.; Ghosh, Monojit; Giganti, C.; Gonin, M.; Grant, N.; Gumplinger, P.; Hadley, D. R.; Hartfiel, B. L.; Hartz, M.; Hayato, Y.; Hayrapetyan, K.; Hill, J.; Hirota, S.; Horiuchi, Shunsaku; Ichikawa, A. K.; Iijima, T.; Ikeda, M.; Imber, J.; Inoue, K.; Insler, J.; Intonti, R. A.; Ioannisian, Ara; Ishida, Toru; Ishino, H.; Ishitsuka, M.; Itow, Y.; Iwamoto, K.; Izmaylov, A.; Jamieson, B.; Jang, H. I.; Jang, J. S.; Jeon, S.; Jeong, Kwang Sik; Jiang, M.; Jonsson, P.; Joo, K. K.; Kaboth, A. C.; Kachulis, C.; Kajita, T.; Kang, Sin Kyu; Kameda, J.; Kataoka, Y.; Katori, T.; Kayrapetyan, K.; Kearns, E.; Khabibullin, M.; Khotjantsev, A.; Kim, 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.; King, S.; Kim, T.J.; Kim, W.; Kishimoto, Y.; Ko, Pyungwon; Kobayashi, T.; Koga, M.; Konaka, A.; Kormos, L. L.; Koshio, Y.; Korzenev, A.; Kowalik, K.; Kropp, W. R.; Kudenko, Y.; Kurjata, R.; Kutter, T.; Kuze, M.; Kwak, Kyujin; Kwon, E.; Labarga, L.; Łagoda, J.; Lasorak, P.; Laveder, M.; Lawe, M.; Learned, J. G.; Lee, C.H.; Lee, S.J.; Lee, W.J.; Lim, I. T.; Lindner, T.; Litchfield, R. P.; Longhin, A.; Loverre, P.; Lou, T.; Ludovici, L.; Ma, W.; Magaletti, L.; Mahn, Kendall; Malek, M.; Maret, L.; Mariani, C.; Martens, K.; Marti, Ll.; Martin, J. F.; Marzec, J.; Matsuno, S.; Mazzucato, E.; McCarthy, M.; McCauley, N.; McFarland, K. S.; McGrew, C.; Mefodiev, A.; Mermod, P.; Metelko, C.; Mezzetto, M.; Migenda, J.; Mijakowski, P.; Minakata, Hisakazu; Minamino, A.; Mine, S.; Mineev, O.; Mitra, Ayan; Miura, Makoto; Mochizuki, T.; Monroe, J.; Moon, C. S.; Moon, D. H.; Moriyama, S.; Mueller, Th A.; Muheim, F.; Murase, Kohta; Muto, Fumihito; Nakahata, M.; Nakajima, Yasuhiro; Nakamura, K.; Nakaya, T.; Nakayama, S.; Nantais, C.; Needham, M.; Nicholls, T. C.; Nishimura, Y.; Noah, E.; Nova, F.; Nowak, J.; Nunokawa, Hiroshi; Obayashi, Y.; Oh, Y. D.; O’Keeffe, H. M.; Okajima, Y.; Okumura, K.; Onishchuk, Y.; O’Sullivan, Erin; O’Sullivan, L.; Ovsiannikova, T.; Owen, R. A.; Oyama, Y.; Pac, M. Y.; Palladino, V.; Palomino, J. L.; Paolone, V.; Park, H.S.; Park, J.C.; Park, M.G.; Park, S.C.; Parker, William C.; Parsa, S.; Payne, D. J.; Perkin, J. D.; Pidcott, C.; Guerra, E. Pinzon; Playfer, S.; Popov, Б.; Posiadała-Zezula, M.; Poutissou, J. M.; Pritchard, A.; Prouse, N. W.; Pronost, G.; Przewłocki, P.; Quilain, B.; Quinto, M.; Radicioni, E.; Ratoff, P. N.; Retière, F.; Riccio, C.; Richards, B.; Rondio, E.; Rose, H. J.; Rott, C.; Rountree, S. D.; Ruggeri, A. C.; Rychter, A.; Ryu, Dongsu; Sacco, R.; Sakuda, M.; Sanchez, M. C.; Scantamburlo, E.; Scott, M.; Sedgwick, S. Molina; Seiya, Y.; Sekiguchi, T.; Sekiya, H.; Seo, H.; Seo, S. H.; Sgalaberna, D.; Shah, R.; Shaikhiev, A.; Shimizu, I.; Shiozawa, M.; Shitov, Yu.; Short, S.; Simpson, C.; Sinnis, G.; Smy, M. B.; Snow, S. W.; Sobczyk, J. T.; Sobel, H. W.; Son, D. C.; Sonoda, Y.; Spina, Roberto; Stewart, T.; Stone, J. L.; Suda, Y.; Suwa, Yudai; Suzuki, Y.; Suzuki, A.; Svoboda, R.; Taani, M.; Tacik, R.; Takeda, Atsushi; Takenaka, A.; Taketa, A.; Takeuchi, Y.; Takhistov, Volodymyr; Tanaka, Hirohisa; Tanaka, Hidekazu; Terri, R.; Thiesse, M.; Thompson, L. F.; Thorpe, M.; Tobayama, S.; Touramanis, C.; Towstego, T.; Tsukamoto, T.; Tsui, K. M.; Tzanov, M.; Uchida, Y.; Vagins, M. R.; Vasseur, G.; Vilela, C.; Vogelaar, R. B.; Walding, J.; Walker, John M.; Ward, M. A.; Wark, D.; Wascko, M. O.; Weber, A.; Wendell, R.; Wilkes, R. J.; Wilking, M. J.; Wilson, J. R.; Won, E.; Tian, Xin; Yamamoto, K.; Yanagisawa, C.; Yano, T.; Yasuda, Osamu; Yen, S.; Yershov, N.; Yeum, D.N.; Yokoyama, M.; Yoo, H. D.; Yoo, J.; Yoon, Sung Chul; Yoon, Tae Seog; Yoshida, Tadashi; Yu, I.; Yu, M.; Zalipska, J.; Заремба, К.; Ziembicki, M.; Zito, M.; Zsoldos, S.

doi:10.1093/ptep/pty044

Cited by 148 publications

(140 citation statements)

References 69 publications

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“…Both sites have been shown to be suitable for a large-cavern excavation using geological surveys. [3]. This difference has no effect on our conclusions.…”

Section: Mount Bisul and Mount Bohyunmentioning

confidence: 58%

“…The most likely candidate site for the Korean detector is Mount Bisul, which is shown to have the highest sensitivity enhancements to non-standard interactions of neutrinos and mass ordering determination, as well as both solar and supernova relic neutrino searches [3].…”

Section: Mount Bisul and Mount Bohyunmentioning

confidence: 99%

“…The location which would provide the second-highest event rate is Mount Bohyun, which also currently hosts the Bohyunsan Optical Astronomy Observatory [3]. Both sites have been shown to be suitable for a large-cavern excavation using geological surveys.…”

Section: Mount Bisul and Mount Bohyunmentioning

confidence: 99%

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Effects of matter density profiles on neutrino oscillations for T2HK and T2HKK

et al. 2020

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This paper explores the effects of changes in matter density profiles on neutrino oscillation probabilities, and whether these could potentially be seen by the future Hyper-Kamiokande long-baseline oscillation experiment (T2HK). The analysis is extended to include the possibility of having an additional detector in Korea (T2HKK). In both cases, we find that these effects will be immeasurable, as the magnitudes of the changes in the oscillation probabilities induced in all density profile scenarios considered here remain smaller than the estimated experimental sensitivity to the oscillation probabilities of each experiment, for both appearance and disappearance channels. Therefore, we conclude that using a constant density profile is sufficient for both the T2HK and T2HKK experiments. * s.f.king@soton.ac.uk, 0000-0002-4351-7507 † Now at IFIC (CSIC -U.

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“…Both sites have been shown to be suitable for a large-cavern excavation using geological surveys. [3]. This difference has no effect on our conclusions.…”

Section: Mount Bisul and Mount Bohyunmentioning

confidence: 58%

Section: Mount Bisul and Mount Bohyunmentioning

confidence: 99%

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Effects of matter density profiles on neutrino oscillations for T2HK and T2HKK

et al. 2020

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“…Combined analysis of current accelerator neutrino oscillation data [28] supports large CP violation in the appearance channel of neutrino oscillations [29,30]. The next-generation neutrino oscillation experiments DUNE and T2HK are projected to observe CP violation in the near future [31,32,33]. At high energy, the most wellstudied process involving CP violation is the very heavy right-handed neutrino decaying into SM leptons and the Higgs boson.…”

Section: Introductionmentioning

confidence: 93%

“…Therefore, we consider Yukawa interactions as shown in Eq. (33). We give a brief discussion on constraints to the sterile neutrino ν s and the new charged particles φ and ψ.…”

Section: Kev Sterile Neutrino Dark Mattermentioning

confidence: 99%

CP violation and circular polarisation in neutrino radiative decay

Balaji

Ramirez-Quezada

Zhou

2020

J. High Energ. Phys.

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The radiative decay of neutral fermions has been studied for decades but CP violation induced within such a paradigm has evaded attention. CP violation in these processes can produce an asymmetry between circularly polarised directions of the radiated photons and produces an important source of net circular polarisation in particle and astroparticle physics observables. The results presented in this work outlines the general connection between CP violation and circular polarisation for both Dirac and Majorana fermions and can be used for any class of models that produce such radiative decays. The total CP violation is calculated based on a widely studied Yukawa interaction considered in both active and sterile neutrino radiative decay scenarios as well as searches for dark matter via direct detection and collider signatures. Finally, the phenomenological implications of the formalism on keV sterile neutrino decay, leptogenesis-induced right-handed neutrino radiative decay and IceCube-driven heavy dark matter decay are discussed. PACS number(s):

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Non-unitary evolution of neutrinos in matter and the leptonic unitarity test

Fong

Minakata

Nunokawa

2019

J. High Energ. Phys.

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We present a comprehensive study of the three-active plus N sterile neutrino model as a framework for constraining leptonic unitarity violation induced at energy scales much lower than the electroweak scale. We formulate a perturbation theory with expansion in small unitarity violating matrix element W while keeping (non-W suppressed) matter effect to all orders. We show that under the same condition of sterile state masses 0.1 eV 2 m 2 J (1-10) GeV 2 as in vacuum, assuming typical accelerator based long-baseline neutrino oscillation experiment, one can derive a very simple form of the oscillation probability which consists only of zeroth-order terms with the unique exception of probability leaking term C αβ of O(W 4 ). We argue, based on our explicit computation to fourth-order in W , that all the other terms are negligibly small after taking into account the suppression due to the mass condition for sterile states, rendering the oscillation probability sterile-sector model independent. Then, we identify a limited energy region in which this suppression is evaded and the effects of order W 2 corrections may be observable. Its detection would provide another way, in addition to detecting C αβ , to distinguish between low-scale and high-scale unitarity violation. We also solve analytically the zerothorder system in matter with uniform density to provide a basis for numerical evaluation of non-unitary neutrino evolution.

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Physics potentials with the second Hyper-Kamiokande detector in Korea

Cited by 148 publications

References 69 publications

Effects of matter density profiles on neutrino oscillations for T2HK and T2HKK

Effects of matter density profiles on neutrino oscillations for T2HK and T2HKK

CP violation and circular polarisation in neutrino radiative decay

Non-unitary evolution of neutrinos in matter and the leptonic unitarity test

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