Scientific article
English

Signal selection and model-independent extraction of the neutrino neutral-current single π+ cross section with the T2K experiment

ContributorsT2K Collaboration
Published inPhysical review. D, vol. 112, no. 7, 072008
First online date2025-10-23
Abstract

This article presents a study of single π + production in neutrino neutral-current interactions ( NC 1 π + ) using the FGD1 hydrocarbon target of the ND280 detector of the T2K experiment. We report the largest sample of such events selected by any experiment, providing the first new data for this channel in over four decades and the first using a sub-GeV neutrino flux. The signal selection strategy and its performance are detailed together with validations of a robust cross section extraction methodology. The measured flux-averaged integrated cross-section is σ = ( 6.07 ± 1.22 ) × 10 − 41     cm 2 / nucleon , 1.3 σ above the NEUT v5.4.0 expectation.

Funding
  • Ministry of Education, Culture, Sports, Science and Technology -
  • Japan Society for the Promotion of Science - [JP16H06288]
  • Natural Sciences and Engineering Research Council of Canada -
  • 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 -
  • Nemzeti Kutatási Fejlesztési és Innovációs Hivatal - [NKFIH 137812]
  • Instituto Nazionale di Fisica Nucleare -
  • Ministerstwo Edukacji i Nauki - [2023/WK/04]
  • Narodowe Centrum Nauki - [UMO-2018/30/E/ST2/00441]
  • Russian Science Foundation - [RSF 24-12-00271]
  • Ministry of Science and Higher Education of the Russian Federation -
  • Ministerio de Ciencia e Innovación - [PID2021-124050NB-C31]
  • Agencia Estatal de Investigación -
  • Federación Española de Enfermedades Raras -
  • University of Tokyo - [FY2023]
  • European Regional Development Fund -
  • NextGenerationEU - [PRTR-C17.I1]
  • Universidad de Sevilla - [VIIPPIT-2023-V.4]
  • Departament d’Empresa i Coneixement, Generalitat de Catalunya -
  • European Social Fund Plus - [2022FI_B 00336]
  • Science and Technology Facilities Council -
  • UK Research and Innovation -
  • U.S. Department of Energy -
  • National Foundation for Science and Technology Development - [103.99-2023.144]
  • European Research Council -
  • National Energy Research Scientific Computing Center - [HEP-ERCAP0028625]
  • ’la Caixa’ Foundation - [LCF/BQ/IN17/11620050]
  • H2020 Marie Skłodowska-Curie Actions - [RISE-GA822070-JENNIFER2 2020]
  • Royal Society -
  • Agence Nationale de la Recherche - [ANR-19-CE31-0001]
  • Government of Andalucia - [FQM160]
  • VAST-JSPS - [QTJP01.02/20-22]
  • Deutsche Forschungsgemeinschaft - Search for CP violation in neutrino oscillations with the experiment T2K-II [397763730]
  • 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]
  • Swiss National Science Foundation - TOWARDS THE IMPROVEMENT OF NEUTRINO OSCILLATION MEASUREMENTS: T2K AND THE JAPANESE PROGRAM [185012]
  • Swiss National Science Foundation - The PLATON detector for precise neutrino detection [203261]
Citation (ISO format)
T2K Collaboration. Signal selection and model-independent extraction of the neutrino neutral-current single π+ cross section with the T2K experiment. In: Physical review. D, 2025, vol. 112, n° 7, p. 072008. doi: 10.1103/wcn1-4tyl
Main files (1)
Article (Published version)
accessLevelRestricted
Identifiers
Additional URL for this publicationhttps://link.aps.org/doi/10.1103/wcn1-4tyl
Journal ISSN2470-0010
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