Testing T2K’s Bayesian constraints with priors in alternate parameterisations

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.

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Journal
The European Physical Journal C
Published
2025-12-12
DOI
https://doi.org/10.1140/epjc/s10052-025-14836-0
Primary Topic
Constraint Satisfaction and Optimization
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article
Field-Weighted Citation Impact
0.00

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article

Testing T2K’s Bayesian constraints with priors in alternate parameterisations

Yuta Kawamura, S.C. Joshi, Lucile Mellet, T. Holvey et al.
The European Physical Journal C
Constraint Satisfaction and Optimization
article

Testing T2K’s Bayesian constraints with priors in alternate parameterisations

Yuta Kawamura, S.C. Joshi, Lucile Mellet, T. Holvey, S. Levorato, M. R. Vagins, K. Ieki, N. Kishore Babu, T. Matsubara, L. Ludovici, M. Lawe, Prokar Dasgupta, Adrien Blanchet, P.S. Chong, Y. Hino, D. Barrow, A. Izmaylov, A. Rychter, D. Martin, E.T Atkin, Niranjan Roy, Ryuji Okazaki, Hiroaki Kobayashi, Rajat Banerjee, S. Lewis, Anne Chalumeau, R. Kurjata, D. Douqa, M. Kabirnezhad, L. Bathe-Peters, M. Martini, M. Scott, Yuji Furui, Takeshi Arai, Katherine Wood, L. Koch, Y. Hayato, Daisuke Wakabayashi, Z. Hu, L. Kneale, J. Łagoda, V. Mikola, S Moriyama, P. Govindaraj, H. Zhong, M. Batkiewicz, T. Nosek, T. Arihara, John R. McKean, K. S. McFarland, Ying Yang, K. Okumura, Takashi Honjo, C. McGrew, T Schefke, Th. A. Mueller, A. Holin, H. Sekiya, E. A. G. Goodman, Y. Noguchi, J. Kisiel, G. Eurin, Martin Scott, Aníbal Kawabata, Sheng Cao, M.G. Catanesi, N. Skrobova, Jia Hu, S. Miki, J. F. Laporte, Howard Sobel, N Latham, Paul A. Bates, V. Glagolev, V. Kurochka, David Langridge, J. A. Caballero, F. Nova, A. K. Ichikawa, H. Tanigawa, T. Sekiya, S. Roth, S. Alonso Monsalve, C. Touramanis, T. Nakaya, A Minamino, L Anthony, Anja Weber, S. Arimoto, R. González-Jiménez, K. Niewczas, J. Chakrani, D. Henaff, A.J. Finch, K. Hosokawa, J. Pasternak, M. Nakahata, D. Fedorova, F. Cadoux, Julie Y. Ji, M. Friend, Xiaoting Lu, L. Munteanu, A. Bubak, J.G Walsh, K. Lachner, P. Novella, F. Pupilli, P. Dunne, S. Zsoldos, N. Jachowicz, H. M. O’Keeffe, L. N. Machado, A. Chvirova, Nobuhiko Onda, S. Karpova, W. Saenz, Yosuke Ashida, T. Yano, K. Skwarczynski, C. Forza, L Lavitola, B. Popov, E. Villa, Thomas Lux, Songlin Liu, T. Katori, V. Berardi, J. Kameda, Jing Xia, T. Hasegawa, Alfonso Muñoz, Y. Nakano, M. Guigue, C. Riccio, Charles M. Davis, Yukie Nagai, P. de Perio, T. A. Doyle, Stephen King, Matthias Pfaff, G. De Rosa, T. Ishida, L. L. Kormos, C. Giganti, AK Suzuki, T. Dealtry, S. Manly, Manisha Mandal, K Abe, Akira Nakano, N. F. Calabria, C. Dalmazzone, A.C Kaboth, Mário Lachat, D. Cherdack, K. Gorshanov, Gareth J. Barker, G. D. Megias, A Blondel, D. D’Ago, D. Ferlewicz, K. Nakagiri, D. Leon Silverio, Shigeaki Ito, E. Kearns, A. Konaka, Hiroshi Itô, Andrew Cudd, K Dygnarowicz, S. Bordoni, Yoko Kudo, N. Thamm, E. W. Miller, Randall J. Harris, S. Cap, Hari Prasad, A. Klustová, K.E Duffy, R. A. Wendell, C. Hasnip, V. Kiseeva, D Carabadjac, G. Erofeev, J. García-Marcos, W. Okinaga, N. Baudis, M. C. F. Hooft, I. Heitkamp, K. A. Apte, V. S. Kasturi, J. Mirabito, H. Alarakia-Charles, Y. I. Alj Hakim, M. Kolupanova, L. Osu, Y. Stroke, Bo Li, Jian Zhang, Wenjun Li, H. Kakuno, S. Han, E. Rondio, A. D. Marino, C. Jesús-Valls, A. Langella, L. Magaletti, Sumiyoshi Abe, C. Wret, M. Ziembicki, Jiaming Jiang, S. Bhattacharjee, Tingge Zhu, A. Ershova, Noriko Yoshimura, S. Bolognesi, A. Longhin, Daniel L. Barrow, G Zarnecki, U. Virginet, Hao Zhong, Masahiro Ikeda, S. J. Jenkins, Yoshiyuki Satō, N. Ospina, F. Di Lodovico, Meng Jia, G. Anthony Reina, Igor Vasilyev, M. Yokoyama, Armando Lopes Moreno, K. Mavrokoridis, M. Shiozawa, J. Holeczek, B. Radics, M. Mezzetto, M. Miura, S. Mine, C. Mauger, D. Last, A. Dergacheva, V.Q Nguyen, P. Morrison, Y. Yoshimoto, Y. Kataoka, A. C. Germer, S.M Lakshmi, Dagan Harris, K. Kowalik, L. Pickering, K. Yamamoto, Y. Fukuda, M. Lamers James, M Feltre, J. P. Coleman, A. Mefodiev, D. Smyczek, Tomislav Vladisavljevic, S Nakayama, S. L. Cartwright, M. Khabibullin, J. Dumarchez, R.P Litchfield, Flynn Guo, R. Akutsu, T. Yamamoto, L. Russo, Thomas Peter Jones, P. Jonsson, N. T. Hong Van, M. Laveder, T Tsukamoto, D.A. Martinez Caicedo, R. Matsumoto, T Wachala, J. Zalipska, P Stowell, D. R. Hadley, T. Nakadaira, Y. Seiya, Y. Fujii, G. Vasseur, L. Labarga, C. Yanagisawa, V. Paolone, Y. Nishimura, M. Zito, N. C. Hastings, M. Tada, C. Metelko, K. Nakayoshi, T. Sekiguchi, M. Tzanov, B Quilain, C Wilkinson, L. O’Sullivan, D Sgalaberna, M. Gonin, Y. Kudenko, C. Bronner, O Drapier, S. Emery-Schrenk, T. Kutter, Marco Grassi, T. Daret, J. González Rosa, K. Scholberg, A. Zalewska, D. Munford, V. Matveev, Y. Koshio, M. Smy, A. Shvartsman, Y. Nakajima, S. Tairafune, M Kawaue, S Nishimori, Yu. I. Davydov, Lluisa Maria Mir Martínez, L. Berns, M. P. Casado, S. Kodama, T. Okusawa, R. Zaki, Richard Ramsden, N. McCauley, R Spina, В. А. Баранов, Shimon Dolan, Niels F. Otani, O. Mineev, Y. Oyama, S Wada, G. Lopez, G D I Barr, M. Varghese, M. D. Fitton, N. Tran, M. Ishitsuka, David A. Payne, K. K. Mahtani, Koji TAKEYA, A. Khotjantsev, C Densham, S. Fedotov, K Sakashita, A Shaikhiev, U Yevarouskaya, A. J. Speers, K. Mahn, M. Reh, S. Aoki, G Collazuol, Hairong Zheng, E. Radicioni, A. Takeda, Yoshimitsu Shiraishi, M. Posiadała-Zezula, S. Hassani, M. Buizza Avanzini, A. Rubbia, F. Sánchez, N. Yershov, A. A. L. Craplet, M Girgus, P. M. M. Boistier, D. Seppala, Joshua E. Elias, Ajit M. Srivastava, Abhay K. Jha, L. Giannessi, Cong Lin, F. Cormier
article en

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.

The European Physical Journal CVol. 85(12)
Eötvös Loránd University (HU), Warsaw University of Technology (PL), Boston University (US), University of Geneva (CH), Tokyo Institute of Technology (JP), Louisiana State University (US), Universitat Autònoma de Barcelona (ES), Rutherford Appleton Laboratory (GB), Centre National de la Recherche Scientifique (FR), University of Minnesota (US), TRIUMF (CA), State University of New York (US), Okayama University of Science (JP), High Energy Accelerator Research Organization (JP), École Polytechnique (FR), University of Liverpool (GB), Lawrence Berkeley National Laboratory (US), Miyagi University of Education (JP), Universitat de València (ES), Tokyo University of Science (JP), Science and Technology Facilities Council (GB), Okayama University (JP), Kavli Institute for the Physics and Mathematics of the Universe (JP), Délégation Paris 7 (FR), University of Pittsburgh (US), Duke University (US), Vietnam National University, Hanoi (VN), Yokohama National University (JP), King's College London (GB), Royal Holloway University of London (GB), South Dakota School of Mines and Technology (US), Institute for High Energy Physics (ES), University of Colorado Boulder (US), York University (CA), Johannes Gutenberg University Mainz (DE), Tohoku University (JP), Keio University (JP), University of California, Irvine (US), Université Paris Cité (FR), University of Wrocław (PL), Kyoto University (JP), Commissariat à l'Énergie Atomique et aux Énergies Alternatives (FR), Université Paris-Saclay (FR), University of Minnesota System (US), Ghent University Hospital (BE), SLAC National Accelerator Laboratory (US), Daresbury Laboratory (GB), University of Colorado System (US), Japan Proton Accelerator Research Complex (JP), Kaichi International University (JP), Ghent University (BE), Joint Institute for Nuclear Research (RU), ETH Zurich (CH), California University of Pennsylvania (US), University of Warwick (GB), Sorbonne Université (FR), University of Oxford (GB), Institute of Physics (PL), National Centre for Nuclear Research (PL), Institute of Particle Physics (CA), Institute for Nuclear Research (RU), Laboratoire de Physique Nucléaire et de Hautes Énergies (FR), Istituto Nazionale di Fisica Nucleare, Sezione di Padova (IT), Institute of Nuclear Physics, Polish Academy of Sciences (PL), Istituto Nazionale di Fisica Nucleare, Sezione di Napoli (IT), Istituto Nazionale di Fisica Nucleare, Sezione di Bari (IT), Institute for Cultural Inquiry (DE), Institute for Theoretical and Experimental Physics (RU), International Centre for Interdisciplinary Science and Education (VN), CEA Paris-Saclay (FR), Instituto de Biomedicina de Valencia (ES), Laboratoire Leprince-Ringuet (FR), Istituto Nazionale di Fisica Nucleare, Sezione di Roma I (IT), Institut de Recherche sur les Lois Fondamentales de l'Univers (FR), University of Toyama (JP), Osaka Metropolitan University (JP), Institute for Cosmic Ray Research (JP), University of Houston (US), University of Warsaw (PL), Imperial College London (GB), University of Rochester (US), Institut Polytechnique des Sciences Avancées (FR), Stony Brook University (US), Universidad Autónoma de Madrid (ES), Kobe University (JP), European Organization for Nuclear Research (CH), Lancaster University (GB), VNU University of Science (VN), Polytechnic University of Bari (IT), Tokyo Metropolitan University (JP), Vietnam Academy of Science and Technology (VN), The University of Tokyo (JP), University of Glasgow (GB), Universidad de Sevilla (ES), University of Pennsylvania (US), Tokyo International University (JP), University of Silesia in Katowice (PL), Michigan State University (US), National Research Nuclear University MEPhI (RU), RWTH Aachen University (DE), University of Sheffield (GB), Stanford University (US)
CERN, Deutsche Forschungsgemeinschaft, Ministry of Education, Culture, Sports, Science and Technology, Centre National de la Recherche Scientifique, Ministerio de Ciencia e Innovación, Russian Science Foundation, Nemzeti Kutatási Fejlesztési és Innovációs Hivatal, Natural Sciences and Engineering Research Council of Canada, Japan Society for the Promotion of Science, Institut National de Physique Nucléaire et de Physique des Particules
Openalex Percentile: Top 65%
Constraint Satisfaction and Optimization
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