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Search for Quantum Decoherence in Neutrino Oscillations with KM3NeT ORCA6

  • KM3NeT Collaboration
  • University of Valencia
  • 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
  • Université catholique de Louvain
  • 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

Quantum decoherence of neutrino states is an effect that is proposed in various theories of quantum gravity. It is envisaged to emerge from interactions of the neutrino as a quantum system with the environment and may destroy the superposition of neutrino mass states, which leads to a modification of neutrino oscillation probabilities. KM3NeT/ORCA, a neutrino telescope designed to detect various neutrino flavours across a broad spectrum of energies, can probe this phenomenon. ORCA is a water Cherenkov detector that is currently under construction in the Mediterranean Sea. It was designed to detect atmospheric neutrinos in the GeV energy range. The main objective of ORCA is the precise measurement of neutrino oscillations. Therefore, the detector provides the possibility to investigate various beyond Standard Model scenarios that may alter the oscillation pattern. This contribution reports on first constraints on the strength of decoherence effects with KM3NeT. We provide upper limits on the decoherence parameters γ21 and γ31. The high-purity neutrino sample used for this analysis was collected with a six Detection Units configuration of ORCA with an exposure of 433 kton-years.

Original languageEnglish
Article number1025
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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