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Detection of the diffuse supernova neutrino background with JUNO

  • The JUNO collaboration
  • CAS - Institute of High Energy Physics
  • Pontificia Universidad Católica de Chile
  • Université de Strasbourg
  • Pakistan Atomic Energy Commission
  • University of Catania
  • East China University of Science and Technology
  • University of Science and Technology of China
  • Joint Institute for Nuclear Research
  • University of Milan
  • Chulalongkorn University
  • Université Paris-Saclay
  • Comenius University
  • University of Ferrara
  • University of Milan - Bicocca
  • National Institute for Nuclear Physics
  • RWTH Aachen University
  • University of Tübingen
  • National Taiwan University
  • Nantes Université
  • UMR 5797
  • University of Padua
  • Roma Tre University
  • Centre de Physique des Particules de Marseille
  • Wuhan University
  • Polytechnic University of Milan
  • National United University Taiwan
  • Dongguan University of Technology
  • Tsinghua University
  • CAS - Institute of Modern Physics
  • National Yang Ming Chiao Tung University
  • North China Electric Power University
  • Sun Yat-Sen University
  • China Aerospace Science and Technology Corporation
  • Universidade Estadual de Londrina
  • University of Perugia
  • Université libre de Bruxelles
  • University of California at Irvine
  • Johannes Gutenberg University Mainz
  • Suranaree University of Technology
  • Charles University
  • Lomonosov Moscow State University
  • Institute for Nuclear Research of the Russian Academy of Sciences
  • School of Physics
  • University of Jyväskylä
  • Wuyi University
  • Chinese Academy of Geological Sciences
  • Jülich Research Centre
  • Jinan University
  • Beijing Normal University
  • Xi'an Jiaotong University
  • University of Hamburg
  • China National Nuclear Corporation
  • Shandong University
  • Guangxi University
  • Shanghai Jiao Tong University
  • A. Alikhanian Yerevan Institute of Physics
  • Nankai University
  • National University of Defense Technology
  • University of Chinese Academy of Sciences
  • University of South China
  • Jilin University
  • Xiamen University
  • Peking University
  • Technical University of Munich
  • Institute of Electronics and Computer Science
  • Universidad Técnica Federico Santa Maria
  • Pontifícia Universidade Católica do Rio de Janeiro
  • Nanjing University
  • National Astronomical Research Institute of Thailand
  • Harbin Institute of Technology
  • Chongqing University

Research output: Contribution to journalConference articlepeer-review

Abstract

As an underground multi-purpose neutrino detector with 20 kton liquid scintillator, Jiangmen Underground Neutrino Observatory (JUNO) is competitive with and complementary to the water-Cherenkov detectors on the search for the diffuse supernova neutrino background (DSNB). Typical supernova models predict 2-4 events per year within the optimal observation window in the JUNO detector. The dominant background is from the neutral-current (NC) interaction of atmospheric neutrinos with 12C nuclei, which surpasses the DSNB by more than one order of magnitude. We evaluated the systematic uncertainty of NC background from the spread of a variety of data-driven models and further developed a method to determine NC background within 15% with in situ measurements after ten years of running. Besides, the NC-like backgrounds can be effectively suppressed by the intrinsic pulse-shape discrimination (PSD) capabilities of liquid scintillators. In this talk, I will present in detail the improvements on NC background uncertainty evaluation, PSD discriminator development, and finally, the potential of DSNB sensitivity in JUNO.

Original languageEnglish
Article number1187
JournalProceedings of Science
Volume395
StatePublished - 18 Mar 2022
Event37th International Cosmic Ray Conference, ICRC 2021 - Virtual, Berlin, Germany
Duration: 12 Jul 202123 Jul 2021

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