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Study of the neutrino-oxygen neutral-current quasielastic cross section using atmospheric neutrinos in the SK-Gd experiment

  • Super-Kamiokande Collaboration
  • Okayama University
  • University of Tokyo
  • Long Beach VA and University of California
  • Universidad Autónoma de Madrid
  • British Columbia Institute of Technology
  • TRIUMF
  • Boston University
  • High Energy Accelerator Research Organization (KEK)
  • California State University, Dominguez Hills
  • Chonnam National University
  • Duke University
  • Ip Paris
  • Gifu University
  • Gwangju Institute of Science and Technology
  • University of Glasgow
  • University of Hawaii
  • Institute for Basic Science (IBS)
  • ICISE
  • Imperial College London
  • Politecnico di Bari
  • University of Naples Federico II
  • University of Padova
  • University of Rome
  • Keio University
  • King's College London
  • Kobe University
  • Kyoto University
  • University of Liverpool
  • Miyagi University of Education
  • Nagoya University
  • National Centre for Nuclear Research (NCBJ)
  • Stony Brook University
  • York College/The City University of New York
  • Osaka Electro-Communication University
  • University of Oxford
  • CCLRC Rutherford Appleton Laboratory
  • Seoul National University
  • The University of Sheffield
  • Shizuoka University of Welfare
  • Sungkyunkwan University
  • Tohoku University
  • Tokai University
  • Tokyo Institute of Technology
  • Tokyo University of Science
  • University of Victoria
  • Tsinghua University
  • University of Warsaw
  • University of Warwick
  • University of Winnipeg
  • Yokohama National University

Research output: Contribution to journalConference articlepeer-review

Abstract

The atmospheric neutrino-oxygen neutral-current quasielasatic (NCQE) reactions are one of the main background in the search for supernova relic neutrinos. Here, we report the first measurement of the atmospheric neutrino-oxygen NCQE cross section in the Super-Kamiokande Gadolinium (SK-Gd) experiment using 552.2 days of full SK-VI data. The measured NCQE cross section is 0.74 ± 0.22(stat.) +0.860.16(syst.) × 10−38 cm2, which is consistent with the theoretical NCQE cross section and the previous study in SK within the range of the uncertainty. Furthermore, we established the verification method for nucleon-nucleus interaction models using atmospheric neutrino events. We performed the verification using the Bertini Cascade model (BERT), the Binary Cascade model (BIC) and the Liège Intranuclear Cascade model (INCL++). As a result, we suggested that BIC and INCL++ are closer to the observed data.

Original languageEnglish
Article number1088
JournalProceedings of Science
Volume444
Publication statusPublished - 27 Sept 2024
Event38th International Cosmic Ray Conference, ICRC 2023 - Nagoya, Japan
Duration: 26 Jul 20233 Aug 2023

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