Search for 
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 Violation in Neutrino and Antineutrino Oscillations by the T2K Experiment with 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>2.2</mml:mn><mml:mo>×</mml:mo><mml:msup><mml:mn>10</mml:mn><mml:mn>21</mml:mn></mml:msup></mml:math>
 Protons on Target

Abe, K.; Akutsu, R.; Ali, Ahmed Farag; Amey, Jake Lewis; Andreopoulos, C.; Anthony, L. H. V.; Antonova, M.; Aoki, Shigeki; Ariga, A.; Ashida, Yosuke; Azuma, Y.; Ban, S.; Barbi, M.; Barker, G. J.; Barr, G.; Barry, C.; Batkiewicz, M.; Bench, F.; Berardi, V.; Berkman, S.; Berner, R. M.; Berns, L.; Bhadra, S.; Bienstock, S.; Blondel, A.; Bolognesi, S.; Bourguille, B.; Boyd, S. B.; Brailsford, D.; Bravar, A.; Bronner, C.; Avanzini, M. Buizza; Calcutt, J.; Campbell, T.; Cao, S.; Cartwright, S. L.; Catanesi, M. G.; Cervera, A.; Chappell, A.; Checchia, C.; Cherdack, D.; Chikuma, N.; Christodoulou, G.; Coleman, J. P.; Collazuol, G.; Coplowe, D.; Cudd, A.; Dąbrowska, A.; Rosa, G. De; Dealtry, T.; Denner, P. F.; Dennis, S. R.; Densham, C.; Lodovico, F. Di; Dokania, N.; Dolan, S.; Drapier, O.; Duffy, K.; Dumarchez, J.; Dunne, P.; Emery-Schrenk, S.; Ereditato, A.; Fernández, P.; Feusels, T.; Finch, A. J.; Fiorentini, G. A.; Fiorillo, G.; François, C.; Friend, M.; Fujii, Y.; Fujita, Ryuichi; Fukuda, Daisuke; Fukuda, Y.; Gameil, K.; Giganti, C.; Gizzarelli, F.; Golan, T.; Gonin, M.; Hadley, D. R.; Haegel, L.; Haigh, J. T.; Hamacher-Baumann, P.; Hansen, D.; Harada, J.; Hartz, M.; Hasegawa, T.; Hastings, N. C.; Hayashino, T.; Hayato, Y.; Hiramoto, A.; Hogan, M.; Holeczek, J.; Hosomi, F.; Ichikawa, A. K.; Ikeda, M.; Imber, J.; Inoue, Takashi; Intonti, R. A.; Ishida, Toru; Ishii, T.; Ishitsuka, M.; Iwamoto, K.; Izmaylov, A.; Jamieson, B.; Jiang, M.; Johnson, S.; Jönsson, P.; Jung, C. K.; Kabirnezhad, M.; Kaboth, A. C.; Kajita, T.; Kakuno, H.; Kameda, J.; Karlen, D.; Katori, T.; Kato, Y.; Kearns, E.; Khabibullin, M.; Khotjantsev, A.; Kim, H.; Kim, J.; King, S.; Kisiel, J.; Knight, A.; Knox, A.; Kobayashi, T.; Koch, L.; Koga, T.; Koller, P. P.; Konaka, A.; Kormos, L. L.; Koshio, Y.; Kowalik, K.; Kubo, H.; Kudenko, Y.; Kurjata, R.; Kutter, T.; Kuze, M.; Labarga, L.; Łagoda, J.; Lamoureux, Mathieu; Lasorak, P.; Laveder, M.; Lawe, M.; Licciardi, M.; Lindner, T.; Liptak, Z.; Litchfield, R. P.; Li, X.; Longhin, A.; Lopez, J. P.; Lou, T.; Ludovici, L.; Lu, X.-G.; Magaletti, L.; Mahn, Kendall; Malek, M.; Manly, S.; Maret, L.; Marino, A. D.; Martin, J. F.; Martins, P.; Maruyama, T.; Matsubara, T.; Matveev, V.; Mavrokoridis, K.; Y., W.; Mazzucato, E.; McCarthy, M.; McCauley, N.; McFarland, K. S.; McGrew, C.; Mefodiev, A.; Metelko, C.; Mezzetto, M.; Minamino, A.; Mineev, O.; Mine, S.; Missert, A.; Miura, Makoto; Moriyama, S.; Morrison, John H.; Mueller, T.; Murphy, S.; Nagai, Y.; Nakadaira, T.; Nakahata, M.; Nakajima, Yasuhiro; Nakamura, K.; Nakamura, K.; Nakanishi, Yuta; Nakayama, S.; Nakaya, T.; Nakayoshi, K.; Nantais, C.; Nielsen, C.; Niewczas, K.; Nishikawa, K.; Nishimura, Y.; Nonnenmacher, T. S.; Novella, P.; Nowak, J.; O’Keeffe, H. M.; O’Sullivan, L.; Okumura, K.; Okusawa, T.; Oryszczak, W.; Oser, S. M.; Owen, R. A.; Oyama, Y.; Palladino, V.; Palomino, J. L.; Paolone, V.; Paudyal, P.; Pavin, M.; Payne, D. J.; Pickering, L.; Pidcott, C.; Guerra, E. S. Pinzon; Pistillo, C.; Popov, Б.; Porwit, K.; Posiadała-Zezula, M.; Pritchard, A.; Quilain, B.; Radermacher, T.; Radicioni, E.; Ratoff, P. N.; Reinherz‐Aronis, E.; Riccio, C.; Rondio, E.; Rossi, B.; Roth, Stefan; Rubbia, A.; Ruggeri, A. C.; Rychter, A.; Sakashita, K.; Sánchez, F.; Sasaki, Shin; Scantamburlo, E.; Scholberg, K.; Schwehr, J.; Scott, M.; Seiya, Y.; Sekiguchi, T.; Sekiya, H.; Sgalaberna, D.; Shah, R.; Shaikhiev, A.; Shaker, F.; Shaw, D.; Shiozawa, M.; Smirnov, A. Yu.; Smy, M.; Sobczyk, J. T.; Sobel, H. W.; Sonoda, Y.; Steinmann, J.; Stewart, T.; Stowell, P.; Suda, Y.; Suvorov, S.; Suzuki, A.; Suzuki, Shoji; Suzuki, Yoshihiro; Sztuc, A. A.; Tacik, R.; Tada, M.; Takeda, Atsushi; Takeuchi, Y.; Tamura, Ryo; Tanaka, Hidekazu; Tanaka, Hirohisa; Thakore, T.; Thompson, L. F.; Toki, W. H.; Touramanis, C.; Tsui, K. M.; Tsukamoto, T.; Tzanov, M.; Uchida, Y.; Uno, W.; Vagins, M. R.; Vallari, Z.; Vasseur, G.; Vilela, C.; Vladisavljevic, T.; Volkov, Vadim; Wąchała, T.; Walker, John M.; Wang, Y.; Wark, D.; Wascko, M. O.; Weber, A.; Wendell, R.; Wilking, M. J.; Wilkinson, C.; Wilson, J. R.; Wilson, R. J.; Wret, C.; Yamada, Y.; Yamamoto, K.; Yamasu, S.; Yanagisawa, C.; Yang, G.; Yano, T.; Yasutome, K.; Yen, S.; Yershov, N.; Yokoyama, M.; Yoshida, Tadashi; Yu, M.; Zalewska, A.; Zalipska, J.; Заремба, К.; Zarnecki, George; Ziembicki, M.; Zimmerman, E. D.; Zito, M.; Zsoldos, S.; Zykova, A.

doi:10.1103/physrevlett.121.171802

Cited by 221 publications

(240 citation statements)

References 41 publications

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“…The precise, unambiguous, determination of θ 13 by reactors greatly improved the sensitivity of long baseline experiments to δ CP and neutrino mass ordering. This is nicely illustrated in Fig.4 where the confidence regions measured by T2K without any input from reactor experiments are compared with the confidence region from reactors [46], indicating how better δ CP is constrained after the inclusion of reactor data.…”

Section: T2kmentioning

confidence: 82%

Three-Flavor Oscillations with Accelerator Neutrino Beams

Mezzetto

Terranova

2020

Universe

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The three-flavor neutrino oscillation paradigm is well established in particle physics thanks to the crucial contribution of accelerator neutrino beam experiments. In this paper we review the most important contributions of these experiments to the physics of massive neutrinos after the discovery of θ 13 and future perspectives in such a lively field of research. Special emphasis is given to the technical challenges of high power beams and the oscillation results of T2K, OPERA, ICARUS and NOνA . We discuss in details the role of accelerator neutrino experiments in the precision era of neutrino physics in view of DUNE and Hyper-Kamiokande, the programme of systematic uncertainty reduction and the development of new beam facilities.

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Section: T2kmentioning

confidence: 82%

Three-Flavor Oscillations with Accelerator Neutrino Beams

Mezzetto

Terranova

2020

Universe

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“…Tiny neutrino masses and neutrino flavour mixing are deduced from solar, atmospheric and reactor neutrino disappearance experiments as well as from accelerator based appearance and disappearance experiments. In addition, recent measurements by the T2K Collaboration in Japan are consistent with CP violation in the neutrino sector at the level of two standard deviations [60,61]. One finds differences between the lightest and second lightest neutrino masses δm 2 = 7.37 +0.17 −0.16 × 10 −5 eV 2 (56) and between the second lightest and heaviest neutrinos…”

Section: Neutrino Masses and Mixingsmentioning

confidence: 84%

“…The observed matter antimatter asymmetry in the Universe requires some extra source of CP violation beyond the quark mixing described by the CKM matrix in the electroweak Standard Model. In the neutrino sector recent measurements by the T2K Collaboration in Japan are consistent with CP violation at the level of two standard deviations [60,61]. In addition, low-energy precision experiments are used to look for possible new sources of CP violation.…”

Section: Particle Physics Today -The Very Successful Standard Modelmentioning

confidence: 99%

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Emergent gauge symmetries and particle physics

Bass

2020

Progress in Particle and Nuclear Physics

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Hadron properties and interactions are emergent from QCD. Atomic and condensed matter physics are emergent from QED. Could the local gauge symmetries of particle physics also be emergent? We give an introduction to this question and recent ideas connecting it to the (meta)stability of the Standard Model Higgs vacuum. With an emergent Standard Model the gauge symmetries would "dissolve" in the ultraviolet. This scenario differs from unification models which exhibit maximum symmetry in the extreme ultraviolet. With emergence, new global symmetry violations would appear in higher dimensional operators.

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“…At low energy, neutrino oscillations provide the best way to clarify its existence in the neutrino sector. 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].…”

Section: Introductionmentioning

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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Search for CP Violation in Neutrino and Antineutrino Oscillations by the T2K Experiment with 2.2×1021 Protons on Target

Cited by 221 publications

References 41 publications

Three-Flavor Oscillations with Accelerator Neutrino Beams

Three-Flavor Oscillations with Accelerator Neutrino Beams

Emergent gauge symmetries and particle physics

CP violation and circular polarisation in neutrino radiative decay

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