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Results from the T2K Experiment on Neutrino Mixing Including a New Far Detector μ-like Sample.

Publication ,  Journal Article
Abe, K; Abe, S; Akutsu, R; Alarakia-Charles, H; Hakim, YIA; Monsalve, SA; Anthony, L; Aoki, S; Apte, KA; Arai, T; Arihara, T; Arimoto, S ...
Published in: Physical review letters
December 2025

We have made improved measurements of three-flavor neutrino mixing with 19.7(16.3)×10^{20} protons on target in (anti-)neutrino-enhanced beam modes. A new sample of muon-neutrino events with tagged pions has been added at the far detector, as well as new proton and photon-tagged samples at the near detector. Significant improvements have been made to the flux and neutrino interaction modeling. T2K data continue to prefer the normal mass ordering and upper octant of sin^{2}θ_{23} with a near-maximal value of the charge-parity violating phase with best-fit values in the normal ordering of δ_{CP}=-2.18_{-0.47}^{+1.22}, sin^{2}θ_{23}=0.559_{-0.078}^{+0.018} and Δm_{32}^{2}=(+2.506_{-0.052}^{+0.039})×10^{-3}  eV^{2}.

Duke Scholars

Published In

Physical review letters

DOI

EISSN

1079-7114

ISSN

0031-9007

Publication Date

December 2025

Volume

135

Issue

26

Start / End Page

261801

Related Subject Headings

  • General Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 40 Engineering
 

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Abe, K., Abe, S., Akutsu, R., Alarakia-Charles, H., Hakim, Y. I. A., Monsalve, S. A., … T2K Collaboration. (2025). Results from the T2K Experiment on Neutrino Mixing Including a New Far Detector μ-like Sample. Physical Review Letters, 135(26), 261801. https://doi.org/10.1103/gh5j-5cwv
Abe, K., S. Abe, R. Akutsu, H. Alarakia-Charles, YI Alj Hakim, S Alonso Monsalve, L. Anthony, et al. “Results from the T2K Experiment on Neutrino Mixing Including a New Far Detector μ-like Sample.Physical Review Letters 135, no. 26 (December 2025): 261801. https://doi.org/10.1103/gh5j-5cwv.
Abe K, Abe S, Akutsu R, Alarakia-Charles H, Hakim YIA, Monsalve SA, et al. Results from the T2K Experiment on Neutrino Mixing Including a New Far Detector μ-like Sample. Physical review letters. 2025 Dec;135(26):261801.
Abe, K., et al. “Results from the T2K Experiment on Neutrino Mixing Including a New Far Detector μ-like Sample.Physical Review Letters, vol. 135, no. 26, Dec. 2025, p. 261801. Epmc, doi:10.1103/gh5j-5cwv.
Abe K, Abe S, Akutsu R, Alarakia-Charles H, Hakim YIA, Monsalve SA, Anthony L, Aoki S, Apte KA, Arai T, Arihara T, Arimoto S, Ashida Y, Atkin ET, Babu N, Baranov V, Barker GJ, Barr G, Barrow D, Bates P, Bathe-Peters L, Batkiewicz-Kwasniak M, Baudis N, Berardi V, Berns L, Bhattacharjee S, Blanchet A, Blondel A, Boistier PMM, Bolognesi S, Bordoni S, Boyd SB, Bronner C, Bubak A, Avanzini MB, Caballero JA, Cadoux F, Calabria NF, Cao S, Cap S, Carabadjac D, Cartwright SL, Casado MP, Catanesi MG, Chakrani J, Chalumeau A, Cherdack D, Chvirova A, Coleman J, Collazuol G, Cormier F, Craplet AAL, Cudd A, D’Ago D, Dalmazzone C, Daret T, Dasgupta P, Davis C, Davydov YI, de Perio P, De Rosa G, Dealtry T, Densham C, Dergacheva A, Banerjee RD, Di Lodovico F, Lopez GD, Dolan S, Douqa D, Doyle TA, Drapier O, Duffy KE, Dumarchez J, Dunne P, Dygnarowicz K, Eguchi A, Elias J, Emery-Schrenk S, Erofeev G, Ershova A, Eurin G, Fedorova D, Fedotov S, Feltre M, Feng L, Ferlewicz D, Finch AJ, Fitton MD, Forza C, Friend M, Fujii Y, Fukuda Y, Furui Y, García-Marcos J, Germer AC, Giannessi L, Giganti C, Girgus M, Glagolev V, Gonin M, Jiménez RG, Rosa JG, Goodman EAG, Gorshanov K, Govindaraj P, Grassi M, Guigue M, Guo FY, Hadley DR, Han S, Harris DA, Harris RJ, Hasegawa T, Hasnip CM, Hassani S, Hastings NC, Hayato Y, Heitkamp I, Henaff D, Hino Y, Holeczek J, Holin A, Holvey T, Van NTH, Honjo T, Hooft MCF, Hosokawa K, Hu J, Ichikawa AK, Ieki K, Ikeda M, Ishida TH, Ishida T, Ishitsuka M, Ito H, Ito S, Izmaylov A, Jachowicz N, Jenkins SJ, Jesús-Valls C, Jia M, Jiang JJ, Ji JY, Jones TP, Jonsson P, Joshi S, Jung CK, Kabirnezhad M, Kaboth AC, Kakuno H, Kameda J, Karpova S, Kasturi VS, Kataoka Y, Katori T, Kawabata A, Kawamura Y, Kawaue M, Kearns E, Khabibullin M, Khotjantsev A, Kikawa T, King S, Kiseeva V, Kisiel J, Klustová A, Kneale L, Kobayashi H, Kobayashi SR, Koch L, Kodama S, Kolupanova M, Konaka A, Kormos LL, Koshio Y, Kowalik K, Kudenko Y, Kudo Y, Jha AK, Kurjata R, Kurochka V, Kutter T, Labarga L, Lachat M, Lachner K, Lagoda J, Lakshmi SM, James ML, Langella A, Langridge DH, Laporte J-F, Last D, Latham N, Laveder M, Lavitola L, Lawe M, Silverio DL, Levorato S, Lewis SV, Li B, Lin C, Litchfield RP, Liu SL, Li W, Longhin A, Moreno AL, Ludovici L, Lu X, Lux T, Machado LN, Magaletti L, Mahn K, Mahtani KK, Mandal M, Manly S, Marino AD, Martin DGR, Caicedo DAM, Martinez L, Martini M, Matsubara T, Matsumoto R, Matveev V, Mauger C, Mavrokoridis K, McCauley N, McFarland KS, McGrew C, McKean J, Mefodiev A, Megias GD, Mellet L, Metelko C, Mezzetto M, Miki S, Mikola V, Miller EW, Minamino A, Mineev O, Mine S, Mirabito J, Miura M, Moriyama S, Morrison P, Mueller TA, Munford D, Muñoz A, Munteanu L, Nagai Y, Nakadaira T, Nakagiri K, Nakahata M, Nakajima Y, Nakamura KD, Nakano A, Nakano Y, Nakayama S, Nakaya T, Nakayoshi K, Naseby CER, Nguyen DT, Nguyen VQ, Niewczas K, Nishimori S, Nishimura Y, Noguchi Y, Nosek T, Nova F, Nugent JC, O’Keeffe HM, O’Sullivan L, Okazaki R, Okinaga W, Okumura K, Okusawa T, Onda N, Ospina N, Osu L, Otani N, Oyama Y, Paolone V, Pasternak J, Payne D, Peacock TPD, Pfaff M, Pickering L, Popov B, Yrey AJP, Posiadala-Zezula M, Prabhu YS, Prasad H, Pupilli F, Quilain B, Quyen PT, Radicioni E, Radics B, Delgado MAR, Ramsden R, Ratoff PN, Reh M, Reina G, Riccio C, Riley DW, Rondio E, Roth S, Roy N, Rubbia A, Russo L, Rychter A, Saenz W, Sakashita K, Samani S, Sánchez F, Sandford EM, Sato Y, Schefke T, Schloesser CM, Scholberg K, Scott M, Seiya Y, Sekiguchi T, Sekiya H, Sekiya T, Seppala D, Sgalaberna D, Shaikhiev A, Shiozawa M, Shiraishi Y, Shvartsman A, Skrobova N, Skwarczynski K, Smyczek D, Smy M, Sobczyk JT, Sobel H, Soler FJP, Speers AJ, Spina R, Srivastava A, Stowell P, Stroke Y, Suslov IA, Suzuki A, Suzuki SY, Tada M, Tairafune S, Takeda A, Takeuchi Y, Takeya K, Tanaka HK, Tanigawa H, Teklu A, Tereshchenko VV, Thamm N, Touramanis C, Tran N, Tsukamoto T, Tzanov M, Uchida Y, Vagins M, Varghese M, Vasilyev I, Vasseur G, Villa E, Virginet U, Vladisavljevic T, Wachala T, Wada S-I, Wakabayashi D, Wallace HT, Walsh JG, Wan L, Wark D, Wascko MO, Weber A, Wendell R, Wilking MJ, Wilkinson C, Wilson JR, Wood K, Wret C, Xia J, Yamamoto K, Yamamoto T, Yanagisawa C, Yang Y, Yano T, Yasutome K, Yershov N, Yevarouskaya U, Yokoyama M, Yoshimoto Y, Yoshimura N, Zaki R, Zalewska A, Zalipska J, Zarnecki G, Zhang J, Zhao XY, Zheng H, Zhong H, Zhu T, Ziembicki M, Zimmerman ED, Zito M, Zsoldos S, T2K Collaboration. Results from the T2K Experiment on Neutrino Mixing Including a New Far Detector μ-like Sample. Physical review letters. 2025 Dec;135(26):261801.

Published In

Physical review letters

DOI

EISSN

1079-7114

ISSN

0031-9007

Publication Date

December 2025

Volume

135

Issue

26

Start / End Page

261801

Related Subject Headings

  • General Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 40 Engineering