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Measuring atmospheric neutrino oscillations with KM3NeT/ORCA6

  • KM3NeT Collaboration
  • IFIC (CSIC-Universitat de València)
  • National Institute for Nuclear Physics
  • Université de Strasbourg
  • Université de Haute-Alsace
  • Aix-Marseille Université
  • University of Naples Federico II
  • Polytechnic University of Catalonia
  • Demokritos National Centre for Scientific Research
  • University of Granada
  • Nantes Université
  • Polytechnic University of Valencia
  • Mohammed V University in Rabat
  • Université de Paris
  • Université de Caen
  • Czech Technical University in Prague
  • Comenius University
  • National Institute for Subatomic Physics
  • University of Bologna
  • University of Campania Luigi Vanvitelli
  • University of Hull
  • North West University
  • Mohamed I University
  • University of Salerno
  • Institute for Space Sciences
  • University of Amsterdam
  • Netherlands Organisation for Applied Scientific Research
  • University of Rome La Sapienza
  • Cadi Ayyad University
  • Friedrich-Alexander University Erlangen-Nürnberg
  • University of the Witwatersrand
  • University of Catania
  • International Centre for Radio Astronomy Research
  • University of Würzburg
  • Western Sydney University
  • LPC
  • University of Genoa
  • Royal Netherlands Institute for Sea Research - NIOZ
  • National Centre for Nuclear Research
  • Nicolaus Copernicus Astronomical Center of the Polish Academy of Sciences
  • Ivane Javakhishvili Tbilisi State University
  • The University of Georgia, Tbilisi
  • Institut universitaire de France
  • IN2P3 - Institut National de Physique Nucléaire et de Physique Des Particules
  • Leiden University
  • Université Montpellier 2

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)

Abstract

The KM3NeT Collaboration is constructing two water-Cherenkov neutrino detectors at the bottom of the Mediterranean Sea: ARCA, which is designed for neutrino astronomy in the TeV to PeV range, and ORCA, optimised for GeV neutrino detection. The ORCA detector will comprise 115 string-like vertical Detection Units arranged in a cylindrical array. Its main objectives are to determine the neutrino mass ordering and measuring atmospheric neutrino oscillations. During 2020 and 2021, an early configuration of the detector with six lines was in operation. A high-purity neutrino sample covering 433 kton-years of exposure was extracted using optimised reconstruction algorithms and machine learning classifiers. In this contribution, the measurement of the neutrino oscillation parameters sin2 θ23 = 0.51+000607 and Δm312 = 2.14+003625 · 10−3eV2, as well as the sensitivity to determine the neutrino mass ordering based on this data sample, will be presented.

Original languageEnglish
Article number996
JournalProceedings of Science
Volume444
Publication statusPublished - 27 Sept 2024
Event38th International Cosmic Ray Conference, ICRC 2023 - Nagoya, Japan
Duration: 26 Jul 20233 Aug 2023

ASJC Scopus subject areas

  • Multidisciplinary

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