Testing T2K’s Bayesian constraints with priors in alternate parameterisations
European Physical Journal C 85:12 (2025) 1414
Authors:
A Abe, S Abe, R Akutsu, H Alarakia-Charles, YI Alj Hakim, S Alonso Monsalve, L Anthony, S Aoki, KA Apte, T Arai, T Arihara, S Arimoto, Y Ashida, ET Atkin, N Babu, V Baranov, GJ Barker, G Barr, D Barrow, P Bates, L Bathe-Peters, M Batkiewicz-Kwasniak, N Baudis, V Berardi, L Berns, S Bhattacharjee, A Blanchet, A Blondel, PMM Boistier, S Bolognesi, S Bordoni, SB Boyd, C Bronner, A Bubak, M Buizza Avanzini, JA Caballero, F Cadoux, NF Calabria, S Cao, S Cap, D Carabadjac, SL Cartwright, MP Casado, MG Catanesi, J Chakrani, A Chalumeau, D Cherdack, PS Chong, A Chvirova, J Coleman, G Collazuol, F Cormier, AAL Craplet, A Cudd, D D’ago, C Dalmazzone, T Daret, P Dasgupta, C Davis, Yu I Davydov, P de Perio, G De Rosa, T Dealtry, C Densham, A Dergacheva, R Dharmapal Banerjee, F Di Lodovico, G Diaz Lopez, S Dolan, D Douqa, TA Doyle, O Drapier, KE Duffy, J Dumarchez, P Dunne, K Dygnarowicz, A Eguchi, J Elias, S Emery-Schrenk, G Erofeev, A Ershova, G Eurin, D Fedorova, S Fedotov, M Feltre, L Feng, D Ferlewicz, AJ Finch, MD Fitton, C Forza, M Friend, Y Fujii, Y Fukuda, Y Furui, J García-Marcos, AC Germer, L Giannessi, C Giganti, M Girgus, V Glagolev, M Gonin, R González Jiménez, J González Rosa, EAG Goodman, K Gorshanov, P Govindaraj, M Grassi, M Guigue, FY Guo, DR Hadley, S Han, DA Harris, RJ Harris, T Hasegawa, CM Hasnip, S Hassani, NC Hastings, Y Hayato, I Heitkamp, D Henaff, Y Hino, J Holeczek, A Holin, T Holvey, NT Hong Van, T Honjo, MCF Hooft, K Hosokawa, J Hu, AK Ichikawa, K Ieki, M Ikeda, T Ishida, M Ishitsuka, H Ito, S Ito, A Izmaylov, N Jachowicz, SJ Jenkins, C Jesús-Valls, M Jia, JJ Jiang, JY Ji, TP Jones, P Jonsson, S Joshi, M Kabirnezhad, AC Kaboth, H Kakuno, J Kameda, S Karpova, VS Kasturi, Y Kataoka, T Katori, A Kawabata, Y Kawamura, M Kawaue, E Kearns, M Khabibullin, A Khotjantsev, T Kikawa, S King, V Kiseeva, J Kisiel, A Klustová, L Kneale, H Kobayashi, L Koch, S Kodama, M Kolupanova, A Konaka, LL Kormos, Y Koshio, K Kowalik, Y Kudenko, Y Kudo, A Kumar Jha, R Kurjata, V Kurochka, T Kutter, L Labarga, M Lachat, K Lachner, J Lagoda, SM Lakshmi, M Lamers James, A Langella, DH Langridge, J-F Laporte, D Last, N Latham, M Laveder, L Lavitola, M Law, D Leon Silverio, S Levorato, SV Lewis, B Li, C Lin, RP Litchfield, SL Liu, W Li, A Longhin, A Lopez Moreno, L Ludovici, X Lu, T Lux, LN Machado, L Magaletti, K Mahn, KK Mahtani, M Mandal, S Manly, AD Marino, DGR Martin, DA Martinez Caicedo, L Martinez, M Martini, T Matsubara, R Matsumoto, V Matveev, C Mauger, K Mavrokoridis, N McCauley, KS McFarland, C McGrew, J McKean, A Mefodiev, GD Megias, L Mellet, C Metelko, M Mezzetto, S Miki, V Mikola, EW Miller, A Minamino, O Mineev, S Mine, J Mirabito, M Miura, S Moriyama, S Moriyama, P Morrison, Th A Mueller, D Munford, A Muñoz, L Munteanu, Y Nagai, T Nakadaira, K Nakagiri, M Nakahata, Y Nakajima, KD Nakamura, A Nakano, Y Nakano, S Nakayama, T Nakaya, K Nakayoshi, CER Naseby, DT Nguyen, VQ Nguyen, K Niewczas, S Nishimori, Y Nishimura, Y Noguchi, T Nosek, F Nova, P Novella, JC Nugent, HM O’Keeffe, L O’Sullivan, R Okazaki, W Okinaga, K Okumura, T Okusawa, N Onda, N Ospina, L Osu, N Otani, Y Oyama, V Paolone, J Pasternak, D Payne, M Pfaff, L Pickering, B Popov, AJ Portocarrero Yrey, M Posiadala-Zezula, YS Prabhu, H Prasad, F Pupilli, B Quilain, PT Quyen, E Radicioni, B Radics, MA Ramirez, R Ramsden, PN Ratoff, M Reh, G Reina, C Riccio, DW Riley, E Rondio, S Roth, N Roy, A Rubbia, L Russo, A Rychter, W Saenz, K Sakashita, S Samani, F Sánchez, EM Sandford, Y Sato, T Schefke, CM Schloesser, K Scholberg, M Scott, Y Seiya, T Sekiguchi, H Sekiya, T Sekiya, D Seppala, D Sgalaberna, A Shaikhiev, M Shiozawa, Y Shiraishi, A Shvartsman, N Skrobova, K Skwarczynski, D Smyczek, M Smy, JT Sobczyk, H Sobel, FJP Soler, AJ Speers, R Spina, A Srivastava, P Stowell, Y Stroke, IA Suslov, A Suzuki, SY Suzuki, M Tada, S Tairafune, A Takeda, M Takeuchi, K Takeya, HK Tanaka, H Tanigawa, VV Tereshchenko, N Thamm, C Touramanis, N Tran, T Tsukamoto, M Tzanov, Y Uchida, M Vagins, M Varghese, I Vasilyev, G Vasseur, E Villa, U Virginet, T Vladisavljevic, T Wachala, S-I Wada, D Wakabayashi, HT Wallace, JG Walsh, L Wan, D Wark, MO Wascko, A Weber, R Wendell, MJ Wilking, C Wilkinson, JR Wilson, K Wood, C Wret, J Xia, K Yamamoto, T Yamamoto, C Yanagisawa, Y Yang, T Yano, N Yershov, U Yevarouskaya, M Yokoyama, Y Yoshimoto, Y Yoshimura, R Zaki, A Zalewska, J Zalipska, G Zarnecki, J Zhang, XY Zhao, H Zheng, H Zhong, T Zhu, M Ziembicki, ED Zimmerman, M Zito, S Zsoldos
Abstract:
Bayesian analysis results require a choice of prior distribution. In long-baseline neutrino oscillation physics, the usual parameterisation of the mixing matrix induces a prior that privileges certain neutrino mass and flavour state symmetries. Here we study the effect of privileging alternate symmetries on the results of the T2K experiment. We find that constraints on the level of CP violation (as given by the Jarlskog invariant) are robust under the choices of prior considered in the analysis. On the other hand, the degree of octant preference for the atmospheric angle depends on which symmetry has been privileged.
