Measurement of muon neutrino induced charged current interactions without charged pions in the final state using a new T2K off-axis near detector WAGASCI-BabyMIND

Article Article scientifique Article Measurement of muon neutrino induced charged current interactions without charged pions in the final state using a new T2K off-axis near detector WAGASCI-BabyMIND eng 2025-12-23 2025 T2K Collaboration collaborator Blondel Alain LPNHE, Paris 133489 Département de physique nucléaire et corpusculaire (FINUC) collaborator Bordoni Stefania ISDC, Versoix 947940 Département de physique nucléaire et corpusculaire (FINUC) collaborator Cadoux Franck ISDC, Versoix 676514 Département de physique nucléaire et corpusculaire (FINUC) collaborator Cap Sébastien ISDC, Versoix 551306 collaborator Douqa Dana 0000-0001-8245-7618 ISDC, Versoix 875400 collaborator Giannessi Lorenzo 0000-0001-6899-7116 ISDC, Versoix 985006 Département de physique nucléaire et corpusculaire (FINUC) collaborator Karpova Svetlana 400546 Département de physique nucléaire et corpusculaire (FINUC) collaborator Kasturi Vedantha Srinivas 937020 Département de physique nucléaire et corpusculaire (FINUC) collaborator Samani Soniya 419357 Département de physique nucléaire et corpusculaire (FINUC) collaborator Sanchez Nieto Federico 0000-0003-0320-3623 909827 Département de physique nucléaire et corpusculaire (FINUC) collaborator Schloesser Caspar 401569 112020 10.1103/fpqb-j6nv 2470-0010 2509.07814 https://link.aps.org/doi/10.1103/fpqb-j6nv We report a flux-integrated cross section measurement of muon neutrino interactions on water and hydrocarbon via charged current reactions without charged pions in the final state with the WAGASCI-BabyMIND detector, which was installed in the T2K near detector hall in 2018. The detector is located 1.5° off-axis and is exposed to a more energetic neutrino flux than ND280, another T2K near detector, which is located at a different off-axis position. The total flux-integrated cross section is measured to be 1.26±0.18(stat+syst)×10-39 cm2/nucleon on CH and 1.44±0.21(stat+syst)×10-39 cm2/nucleon on H2O. These results are compared to model predictions provided by the neut v5.3.2 and genie v2.8.0 Monte Carlo generators and the measurements are compatible with these models. Differential cross sections in muon momentum and cosine of the muon scattering angle are also reported. This is the first such measurement reported with the WAGASCI-BabyMIND detector and utilizes the 2020 and 2021 datasets. Dewey 500.2 Ministry of Education, Culture, Sports, Science and Technology Japan Society for the Promotion of Science JP16H06288 Natural Sciences and Engineering Research Council of Canada HEP-ERCAP0028625 Canada Foundation for Innovation Commissariat à l’Énergie Atomique et aux Énergies Alternatives Centre National de la Recherche Scientifique Institut National de Physique Nucléaire et de Physique des Particules Deutsche Forschungsgemeinschaft 397763730 Nemzeti Kutatási Fejlesztési és Innovációs Hivatal 137812 Ministerstwo Edukacji i Nauki 2023/WK/04 Narodowe Centrum Nauki UMO 2018/30/E/ST2/00441 Russian Science Foundation Ministry of Science and Higher Education of the Russian Federation Ministerio de Ciencia e Innovación PID2022 136297NB-I00 Agencia Estatal de Investigación European Regional Development Fund University of Tokyo J1 NextGenerationEU PRTR-C17.I1 Centres de Recerca de Catalunya Universidad de Sevilla VIIPPIT 2023-V.4 Departament d’Empresa i Coneixement, Generalitat de Catalunya European Social Fund Plus 2022FI B 00336 UK Research and Innovation U.S. Department of Energy National Foundation for Science and Technology Development 103.99-2023.144 Seventh Framework Programme “la Caixa” Foundation 100010434 Horizon 2020 Framework Programme Agence Nationale de la Recherche ANR 19-CE31-0001 UE, Spain PID2021-124050NB-C31 Government of Andalucia FQM160 European Commission Innovative doctoral programme for talented early-stage researchers in Spanish host organisations excellent in the areas of Science, Technology, Engineering and Mathematics (STEM). 713673 INPhINIT EU H2020 Swiss National Science Foundation TOWARDS THE IMPROVEMENT OF NEUTRINO OSCILLATION MEASUREMENTS: T2K AND THE JAPANESE PROGRAM 185012 CH Swiss National Science Foundation The PLATON detector for precise neutrino detection 203261 CH 34 Département de physique nucléaire et corpusculaire 132 false Physical review. D. 112 11 387a67f7-5784-4bac-854d-a26b646c075b Article (Published version) Public Article_scientifique_from_crossref.pdf 2428083 application/pdf CC BY-4.0 bc4efc52d673f274df7334a6e77722bd9323701dcc4cca3a3e4eca7c4ff153dc openAccess Faculté des sciences / Section de physique / Département de physique nucléaire et corpusculaire

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Measurement of muon neutrino induced charged current interactions without charged pions in the final state using a new T2K off-axis near detector WAGASCI-BabyMIND	Physical review. D.			2025	9	60

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