Search for heavy neutrinos with the T2K near detector ND280

Abe, K.; Akutsu, R.; Ali, Ahmed Farag; Andreopoulos, C.; Anthony, L. H. V.; Antonova, M.; Aoki, Shigeki; Ariga, A.; Ashida, Yosuke; Awataguchi, Y.; Azuma, Y.; Ban, S.; Barbi, M.; Barker, G. J.; Barr, G.; Barry, C.; Batkiewicz-Kwasniak, 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.; Hartz, M.; Hasegawa, T.; Hastings, N. C.; Hayashino, T.; Hayato, Y.; Hiramoto, A.; Hogan, M.; Holeczek, J.; Van, N. T. Hong; Hosomi, F.; Iacob, F.; Ichikawa, A. K.; Ikeda, M.; Inoue, Takashi; Intonti, R. A.; Ishida, Toru; Ishii, T.; Ishitsuka, M.; Iwamoto, K.; Izmaylov, A.; Jamieson, B.; Jesús, Carlos Echeverrı́a; 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, Toshio; 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.; Lux, T.; 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.; Miura, M.; Molina-Bueno, L.; Moriyama, S.; Morrison, John H.; Mueller, T.; Murphy, S.; Nagai, Y.; Nakadaira, T.; Nakahata, M.; Nakajima, Yasuhiro; Nakamura, Akihiko; Nakamura, K.; Nakamura, K.; Nakanishi, Yuta; Nakayama, S.; Nakaya, T.; Nakayoshi, K.; Nantais, 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.; Parker, William C.; 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.; Radics, B.; 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.; Schloesser, C. M.; Scholberg, K.; Schwehr, J.; Scott, M.; Seiya, Y.; Sekiguchi, T.; Sekiya, H.; Sgalaberna, D.; Shah, R.; Shaikhiev, A.; Shaker, F.; Shaw, D.; Shaykina, A.; 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, Y.; 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.; Vargas, D.; 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.; Gao, Yang; 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/physrevd.100.052006

Cited by 92 publications

(138 citation statements)

References 28 publications

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“…Other notable results of the T2K Collaboration are several measurements of neutrino cross sections [54], searches for light sterile neutrinos [55] and searches for heavy neutrinos [56].…”

Section: Of 31mentioning

confidence: 99%

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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“…Other notable results of the T2K Collaboration are several measurements of neutrino cross sections [54], searches for light sterile neutrinos [55] and searches for heavy neutrinos [56].…”

Section: Of 31mentioning

confidence: 99%

Three-Flavor Oscillations with Accelerator Neutrino Beams

Mezzetto

Terranova

2020

Universe

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“…We find that the limits derived from our simplified analysis is already able to set tight constraints on the mixing of HNL with the electron and muon neutrino sectors, between 10 −6 and 10 −7 for m N in the range between 150 MeV and 450 MeV. Our limits are also compared with those obtained from displaced decay searches at PS191 [13,14] and at the T2K near detector [15], as well as from peak searches in E949 [11], PIENU [35] and NA62 [12]. In the case of |U e | 2 , the limits obtained from SK are comparable or even better than analogous limits from peak searches, while they are not competitive with those from displaced decay searches.…”

mentioning

confidence: 70%

“…3: SK constraints on the minimal HNL scenario at 90% C.L., projected onto the plane |Ue| 2 vs mN (for Uµ,τ = 0). Our results (solid black lines) are compared to corresponding limits obtained for the T2K near detector [15], NA62 [12], E949 [11], PS191 [13,14] and PIENU [35]. the best present upper bounds).…”

mentioning

confidence: 88%

“…In this letter we focus on the lighter mass region instead, where the HNL can be produced in kaon and pion decays for which the atmospheric flux is significantly larger. The most stringent bounds for HNL below the kaon mass come from peak searches [11,12] and displaced HNL decay vertex searches [13][14][15]. However, for masses below the kaon and pion mass the HNL becomes very long-lived: although the value of its lifetime in the rest frame (τ ) depends strongly on its mass and on its mixing with the light states, in the minimal model described above it ranges between cτ ∼ (10 −4 − 50) × |U α | −2 (km), for m N between 40 MeV and 400 MeV.…”

mentioning

confidence: 99%

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New constraints on heavy neutral leptons from Super-Kamiokande data

Coloma¹,

Hernández²,

Muñoz³

et al. 2020

Eur. Phys. J. C

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Heavy neutral leptons are predicted in many extensions of the Standard Model with massive neutrinos. If kinematically accessible, they can be copiously produced from kaon and pion decays in atmospheric showers, and subsequently decay inside large neutrino detectors. We perform a search for these long-lived particles using Super-Kamiokande multi-GeV neutrino data and derive stringent limits on the mixing with electron, muon and tau neutrinos as a function of the long-lived particle mass. We also present the limits on the branching ratio versus lifetime plane, which are helpful in determining the constraints in non-minimal models where the heavy neutral leptons have new interactions with the Standard Model.

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“…• The long-baseline neutrino oscillation experiment T2K [97] searched for an admixture of N in its initial neutrino beam flux, produced by colliding 30 GeV protons with a graphite target at J-PARC. Daughter K ± of a given charge are focused and decay via K → ν(N ).…”

Section: Meson Decays and Beam-dump Experimentsmentioning

confidence: 99%

Neutrinoless double beta decay versus other probes of heavy sterile neutrinos

Bolton

Deppisch

Dev³

2020

J. High Energ. Phys.

171

138

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We make a comparative study of the neutrinoless double beta decay constraints on heavy sterile neutrinos versus other direct and indirect constraints from both lepton number conserving and violating processes, as a sensitive probe of the extent of lepton number violation and possible interference effects in the sterile sector. To this effect, we introduce a phenomenological parametrisation of the simplified one-generation seesaw model with one active and two sterile neutrino states in terms of experimentally measurable quantities, such as active-sterile neutrino mixing angles, CP phases, masses and mass splittings. This simple parametrisation enables us to analytically derive a spectrum of possible scenarios between the canonical seesaw with purely Majorana heavy neutrinos and inverse seesaw with pseudo-Dirac ones. We then go on to constrain the simplified parameters of this model from various experiments in energy, intensity and cosmic frontiers. We emphasise that the constraints from lepton number violating processes strongly depend on the mass splitting between the two sterile states and the relative CP phase between them. This is particularly relevant for the neutrinoless double beta decay constraint, which could now get significantly weaker for small mass splitting and opposite CP parities between the sterile states. It is important to keep this in mind while comparing the neutrinoless double beta decay constraint with the direct search limits in the electron flavour from high-energy colliders.

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Search for heavy neutrinos with the T2K near detector ND280

Cited by 92 publications

References 28 publications

Three-Flavor Oscillations with Accelerator Neutrino Beams

Three-Flavor Oscillations with Accelerator Neutrino Beams

New constraints on heavy neutral leptons from Super-Kamiokande data

Neutrinoless double beta decay versus other probes of heavy sterile neutrinos

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