Search for electron antineutrino appearance in a long-baseline muon antineutrino beam

Abe, K; Akutsu, R; Ali, A; Alt, C; Andreopoulos, C; Anthony, L; Antonova, M; Aoki, S; Ariga, A; Asada, Y; Ashida, Y; Atkin, ET; Awataguchi, Y; Ban, S; Barbi, M; Barker, GJ; Barr, G; Barrow, D; Barry, C; Batkiewicz-Kwasniak, M; Beloshapkin, A; Bench, F; Berardi, V; Berkman, S; Berns, L; Bhadra, S; Bienstock, S; Blondel, A; Bolognesi, S; Bourguille, B; Boyd, SB; Brailsford, D; Bravar, A; Bravo Berguno, D; Bronner, C; Bubak, A; Avanzini, MB; Calcutt, J; Campbell, T; Cao, S; Cartwright, SL; Catanesi, MG; Cervera, A; Chappell, A; Checchia, C; Cherdack, D; Chikuma, N; Christodoulou, G; Coleman, J; Collazuol, G; Cook, L; Coplowe, D; Cudd, A; Dabrowska, A; De Rosa, G; Dealtry, T; Denner, PF; Dennis, SR; Densham, C; Di Lodovico, F; Dokania, N; Dolan, S; Doyle, TA; Drapier, O; Dumarchez, J; Dunne, P; Eklund, L; Emery-Schrenk, S; Ereditato, A; Fernandez, P; Feusels, T; Finch, AJ; Fiorentini, GA; Fiorillo, G; Francois, C; Friend, M; Fujii, Y; Fujita, R; Fukuda, D; Fukuda, R; Fukuda, Y; Fusshoeller, K; Gameil, K; Giganti, C; Golan, T; Gonin, M; Gorin, A; Guigue, M; Hadley, DR; Haigh, JT; Hamacher-Baumann, P; Hartz, M; Hasegawa, T; Hastings, NC; Hayashino, T; Hayato, Y; Hiramoto, A; Hogan, M; Holeczek, J; Van, NTH; Iacob, F; Ichikawa, AK; Ikeda, M; Ishida, T; Ishii, T; Ishitsuka, M; Iwamoto, K; Izmaylov, A; Jakkapu, M; Jamieson, B; Jenkins, SJ; Jesus-Valls, C; Jiang, M; Johnson, S; Jonsson, P; Jung, CK; Kabirnezhad, M; Kaboth, AC; Kajita, T; Kakuno, H; Kameda, J; Karlen, D; Kasetti, SP; Kataoka, Y; Katori, T; Kato, Y; Kearns, E; Khabibullin, M; Khotjantsev, A; Kikawa, T; Kim, H; Kim, J; King, S; Kisiel, J; Knight, A; Knox, A; Kobayashi, T; Koch, L; Koga, T; Konaka, A; Kormos, LL; Koshio, Y; Kostin, A; Kowalik, K; Kubo, H; Kudenko, Y; Kukita, N; Kuribayashi, S; Kurjata, R; Kutter, T; Kuze, M; Labarga, L; Lagoda, J; Lamoureux, M; Laveder, M; Lawe, M; Licciardi, M; Lindner, T; Litcheld, RP; Liu, SL; Li, X; Longhin, A; Ludovici, L; Lu, X; Lux, T; Machado, LN; Magaletti, L; Mahn, K; Malek, M; Manly, S; Maret, L; Marino, AD; Marti-Magro, L; Martin, JF; Maruyama, T; Matsubara, T; Matsushita, K; Matveev, V; Mavrokoridis, K; Mazzucato, E; McCarthy, M; McCauley, N; McFarland, KS; McGrew, C; Mefodiev, A; Metelko, C; Mezzetto, M; Minamino, A; Mineev, O; Mine, S; Miura, M; Bueno, LM; Moriyama, S; Morrison, J; Mueller, TA; Munteanu, L; Murphy, S; Nagai, Y; Nakadaira, T; Nakahata, M; Nakajima, Y; Nakamura, A; Nakamura, KG; Nakamura, K; Nakayama, S; Nakaya, T; Nakayoshi, K; Nantais, C; Ngoc, T; Niewczas, K; Nishikawa, K; Nishimura, Y; Nonnenmacher, TS; Nova, F; Novella, P; Nowak, J; Nugent, JC; O'Keeffe, HM; O'Sullivan, L; Odagawa, T; Okumura, K; Okusawa, T; Oser, SM; Owen, RA; Oyama, Y; Palladino, V; Palomino, JL; Paolone, V; Parker, WC; Pasternak, J; Paudyal, P; Pavin, M; Payne, D; Penn, GC; Pickering, L; Pidcott, C; Pintaudi, G; Guerra, ESP; Pistillo, C; Popov, B; Porwit, K; Posiadala-Zezula, M; Pritchard, A; Quilain, B; Radermacher, T; Radicioni, E; Radics, B; Rato, PN; Reinherz-Aronis, E; Riccio, C; Rondio, E; Roth, S; Rubbia, A; Ruggeri, AC; Ruggles, CA; Rychter, A; Sakashita, K; Sanchez, F; Schloesser, CM; Scholberg, K; Schwehr, J; Scott, M; Seiya, Y; Sekiguchi, T; Sekiya, H; Sgalaberna, D; Shah, R; Shaikhiev, A; Shaker, F; Shaykina, A; Shiozawa, M; Shorrock, W; Shvartsman, A; Smirnov, A; Smy, M; Sobczyk, JT; Sobel, H; Soler, FJP; Sonoda, Y; Steinmann, J; Suvorov, S; Suzuki, A; Suzuki, SY; Suzuki, Y; Sztuc, AA; Tada, M; Tajima, M; Takeda, A; Takeuchi, Y; Tanaka, HK; Tanaka, HA; Tanaka, S; Thompson, LF; Toki, W; Touramanis, C; Towstego, T; Tsui, KM; Tsukamoto, T; Tzanov, M; Uchida, Y; Uno, W; Vagins, M; Valder, S; Vallari, Z; Vargas, D; Vasseur, G; Vilela, C; Vinning, WGS; Vladisavljevic, T; Volkov, VV; Wachala, T; Walker, J; Walsh, JG; Wang, Y; Wark, D; Wascko, MO; Weber, A; Wendell, R; Wilking, MJ; Wilkinson, C; Wilson, JR; Wilson, RJ; Wood, K; Wret, C; Yamada, Y; Yamamoto, K; Yanagisawa, C; Yang, G; Yano, T; Yasutome, K; Yen, S; Yershov, N; Yokoyama, M; Yoshida, T; Yu, M; Zalewska, A; Zalipska, J; Zaremba, K; Zarnecki, G; Ziembicki, M; Zimmerman, ED; Zito, M; Zsoldos, S; Zykova, A

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Search for electron antineutrino appearance in a long-baseline muon antineutrino beam

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Title:	Search for electron antineutrino appearance in a long-baseline muon antineutrino beam
Authors:	Abe, K Akutsu, R Ali, A Alt, C Andreopoulos, C Anthony, L Antonova, M Aoki, S Ariga, A Asada, Y Ashida, Y Atkin, ET Awataguchi, Y Ban, S Barbi, M Barker, GJ Barr, G Barrow, D Barry, C Batkiewicz-Kwasniak, M Beloshapkin, A Bench, F Berardi, V Berkman, S Berns, L Bhadra, S Bienstock, S Blondel, A Bolognesi, S Bourguille, B Boyd, SB Brailsford, D Bravar, A Bravo Berguno, D Bronner, C Bubak, A Avanzini, MB Calcutt, J Campbell, T Cao, S Cartwright, SL Catanesi, MG Cervera, A Chappell, A Checchia, C Cherdack, D Chikuma, N Christodoulou, G Coleman, J Collazuol, G Cook, L Coplowe, D Cudd, A Dabrowska, A De Rosa, G Dealtry, T Denner, PF Dennis, SR Densham, C Di Lodovico, F Dokania, N Dolan, S Doyle, TA Drapier, O Dumarchez, J Dunne, P Eklund, L Emery-Schrenk, S Ereditato, A Fernandez, P Feusels, T Finch, AJ Fiorentini, GA Fiorillo, G Francois, C Friend, M Fujii, Y Fujita, R Fukuda, D Fukuda, R Fukuda, Y Fusshoeller, K Gameil, K Giganti, C Golan, T Gonin, M Gorin, A Guigue, M Hadley, DR Haigh, JT Hamacher-Baumann, P Hartz, M Hasegawa, T Hastings, NC Hayashino, T Hayato, Y Hiramoto, A Hogan, M Holeczek, J Van, NTH Iacob, F Ichikawa, AK Ikeda, M Ishida, T Ishii, T Ishitsuka, M Iwamoto, K Izmaylov, A Jakkapu, M Jamieson, B Jenkins, SJ Jesus-Valls, C Jiang, M Johnson, S Jonsson, P Jung, CK Kabirnezhad, M Kaboth, AC Kajita, T Kakuno, H Kameda, J Karlen, D Kasetti, SP Kataoka, Y Katori, T Kato, Y Kearns, E Khabibullin, M Khotjantsev, A Kikawa, T Kim, H Kim, J King, S Kisiel, J Knight, A Knox, A Kobayashi, T Koch, L Koga, T Konaka, A Kormos, LL Koshio, Y Kostin, A Kowalik, K Kubo, H Kudenko, Y Kukita, N Kuribayashi, S Kurjata, R Kutter, T Kuze, M Labarga, L Lagoda, J Lamoureux, M Laveder, M Lawe, M Licciardi, M Lindner, T Litcheld, RP Liu, SL Li, X Longhin, A Ludovici, L Lu, X Lux, T Machado, LN Magaletti, L Mahn, K Malek, M Manly, S Maret, L Marino, AD Marti-Magro, L Martin, JF Maruyama, T Matsubara, T Matsushita, K Matveev, V Mavrokoridis, K Mazzucato, E McCarthy, M McCauley, N McFarland, KS McGrew, C Mefodiev, A Metelko, C Mezzetto, M Minamino, A Mineev, O Mine, S Miura, M Bueno, LM Moriyama, S Morrison, J Mueller, TA Munteanu, L Murphy, S Nagai, Y Nakadaira, T Nakahata, M Nakajima, Y Nakamura, A Nakamura, KG Nakamura, K Nakayama, S Nakaya, T Nakayoshi, K Nantais, C Ngoc, T Niewczas, K Nishikawa, K Nishimura, Y Nonnenmacher, TS Nova, F Novella, P Nowak, J Nugent, JC O'Keeffe, HM O'Sullivan, L Odagawa, T Okumura, K Okusawa, T Oser, SM Owen, RA Oyama, Y Palladino, V Palomino, JL Paolone, V Parker, WC Pasternak, J Paudyal, P Pavin, M Payne, D Penn, GC Pickering, L Pidcott, C Pintaudi, G Guerra, ESP Pistillo, C Popov, B Porwit, K Posiadala-Zezula, M Pritchard, A Quilain, B Radermacher, T Radicioni, E Radics, B Rato, PN Reinherz-Aronis, E Riccio, C Rondio, E Roth, S Rubbia, A Ruggeri, AC Ruggles, CA Rychter, A Sakashita, K Sanchez, F Schloesser, CM Scholberg, K Schwehr, J Scott, M Seiya, Y Sekiguchi, T Sekiya, H Sgalaberna, D Shah, R Shaikhiev, A Shaker, F Shaykina, A Shiozawa, M Shorrock, W Shvartsman, A Smirnov, A Smy, M Sobczyk, JT Sobel, H Soler, FJP Sonoda, Y Steinmann, J Suvorov, S Suzuki, A Suzuki, SY Suzuki, Y Sztuc, AA Tada, M Tajima, M Takeda, A Takeuchi, Y Tanaka, HK Tanaka, HA Tanaka, S Thompson, LF Toki, W Touramanis, C Towstego, T Tsui, KM Tsukamoto, T Tzanov, M Uchida, Y Uno, W Vagins, M Valder, S Vallari, Z Vargas, D Vasseur, G Vilela, C Vinning, WGS Vladisavljevic, T Volkov, VV Wachala, T Walker, J Walsh, JG Wang, Y Wark, D Wascko, MO Weber, A Wendell, R Wilking, MJ Wilkinson, C Wilson, JR Wilson, RJ Wood, K Wret, C Yamada, Y Yamamoto, K Yanagisawa, C Yang, G Yano, T Yasutome, K Yen, S Yershov, N Yokoyama, M Yoshida, T Yu, M Zalewska, A Zalipska, J Zaremba, K Zarnecki, G Ziembicki, M Zimmerman, ED Zito, M Zsoldos, S Zykova, A
Item Type:	Journal Article
Abstract:	Electron antineutrino appearance is measured by the T2K experiment in an accelerator-produced antineutrino beam, using additional neutrino beam operation to constrain parameters of the Pontecorvo-Maki-Nakagawa-Sakata (PMNS) mixing matrix. T2K observes 15 candidate electron antineutrino events with a background expectation of 9.3 events. Including information from the kinematic distribution of observed events, the hypothesis of no electron antineutrino appearance is disfavored with a significance of 2.40 σ and no discrepancy between data and PMNS predictions is found. A complementary analysis that introduces an additional free parameter which allows non-PMNS values of electron neutrino and antineutrino appearance also finds no discrepancy between data and PMNS predictions.
Issue Date:	21-Apr-2020
Date of Acceptance:	1-Apr-2020
URI:	http://hdl.handle.net/10044/1/79254
DOI:	10.1103/PhysRevLett.124.161802
ISSN:	0031-9007
Publisher:	American Physical Society
Start Page:	161802-1
End Page:	161802-8
Journal / Book Title:	Physical Review Letters
Volume:	124
Issue:	16
Copyright Statement:	© 2020 The Author(s). Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license (https://creativecommons.org/licenses/by/4.0/). Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
Sponsor/Funder:	Science and Technology Facilities Council (STFC) Science and Technology Facilities Council (STFC)
Funder's Grant Number:	ST/H000992/1 ST/S001174/4
Keywords:	Science & Technology Physical Sciences Physics, Multidisciplinary Physics T2K Collaboration Science & Technology Physical Sciences Physics, Multidisciplinary Physics hep-ex hep-ex 01 Mathematical Sciences 02 Physical Sciences 09 Engineering General Physics
Publication Status:	Published
Article Number:	ARTN 161802
Online Publication Date:	2020-04-21
Appears in Collections:	Physics High Energy Physics