Measurement of neutrino oscillation parameters with the first six detection units of KM3NeT/ORCA

doi:10.1007/JHEP10(2024)206

Measurement of neutrino oscillation parameters with the first six detection units of KM3NeT/ORCA

Physics

Sezione di Catania
Institut de Recherches Subatomiques
University of Haute Alsace
CPPM
CSIC-Universitat de València
Sezione di Napoli
Università di Napoli 'Federico II' and Sezione INFN
INFN
Universitat Politécnica de Catalunya
Université de Nantes
Universidad Politecnica de Valencia
Faculte des Sciences
Université de Paris
Università degli Studi di Genova
Sezione di Genova
Ensicaen
Comenius University
Sezione di Bologna
University of Bologna
Second University of Naples
University of Hull
NIKHEF
North-West University
Universite de Annaba
University of Salerno
Institute of Space Sciences
TNO Bldg. and Construction Research
Dipartimento di Fisica

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

KM3NeT/ORCA is a water Cherenkov neutrino detector under construction and anchored at the bottom of the Mediterranean Sea. The detector is designed to study oscillations of atmospheric neutrinos and determine the neutrino mass ordering. This paper focuses on an initial configuration of ORCA, referred to as ORCA6, which comprises six out of the foreseen 115 detection units of photo-sensors. A high-purity neutrino sample was extracted, corresponding to an exposure of 433 kton-years. The sample of 5828 neutrino candidates is analysed following a binned log-likelihood method in the reconstructed energy and cosine of the zenith angle. The atmospheric oscillation parameters are measured to be sin²θ₂₃=0.51_−0.05^+0.04, and Δm₃₁²=2.18_−0.35^+0.25×10⁻³eV²∪−2.25−1.76×10⁻³ eV² at 68% CL. The inverted neutrino mass ordering hypothesis is disfavoured with a p-value of 0.25.

Original language	British English
Article number	206
Journal	Journal of High Energy Physics
Volume	2024
Issue number	10
DOIs	https://doi.org/10.1007/JHEP10(2024)206
State	Published - Oct 2024

Keywords

Neutrino Detectors and Telescopes (experiments)
Oscillation

Access to Document

10.1007/JHEP10(2024)206

OpenUrl availability

Full text

Cite this

@article{87bbff1ce8544a2cbc21392213495cfc,

title = "Measurement of neutrino oscillation parameters with the first six detection units of KM3NeT/ORCA",

abstract = "KM3NeT/ORCA is a water Cherenkov neutrino detector under construction and anchored at the bottom of the Mediterranean Sea. The detector is designed to study oscillations of atmospheric neutrinos and determine the neutrino mass ordering. This paper focuses on an initial configuration of ORCA, referred to as ORCA6, which comprises six out of the foreseen 115 detection units of photo-sensors. A high-purity neutrino sample was extracted, corresponding to an exposure of 433 kton-years. The sample of 5828 neutrino candidates is analysed following a binned log-likelihood method in the reconstructed energy and cosine of the zenith angle. The atmospheric oscillation parameters are measured to be sin2θ23=0.51−0.05+0.04, and Δm312=2.18−0.35+0.25×10−3eV2∪−2.25−1.76×10−3 eV2 at 68\% CL. The inverted neutrino mass ordering hypothesis is disfavoured with a p-value of 0.25.",

keywords = "Neutrino Detectors and Telescopes (experiments), Oscillation",

author = "S. Aiello and A. Albert and Alhebsi, \{A. R.\} and M. Alshamsi and \{Alves Garre\}, S. and A. Ambrosone and F. Ameli and M. Andre and L. Aphecetche and M. Ardid and S. Ardid and H. Atmani and J. Aublin and F. Badaracco and L. Bailly-Salins and Z. Barda{\v c}ov{\'a} and B. Baret and A. Bariego-Quintana and Y. Becherini and M. Bendahman and F. Benfenati and M. Benhassi and M. Bennani and Benoit, \{D. M.\} and E. Berbee and V. Bertin and S. Biagi and M. Boettcher and D. Bonanno and Bouasla, \{A. B.\} and J. Boumaaza and M. Bouta and M. Bouwhuis and C. Bozza and Bozza, \{R. M.\} and H. Br{\^a}nza{\c s} and F. Bretaudeau and M. Breuhaus and R. Bruijn and J. Brunner and R. Bruno and E. Buis and R. Buompane and J. Busto and B. Caiffi and D. Calvo and A. Capone and F. Carenini and S. Thoudam and \{van Vliet\}, A.",

note = "Publisher Copyright: {\textcopyright} The Author(s) 2024.",

year = "2024",

month = oct,

doi = "10.1007/JHEP10(2024)206",

language = "British English",

volume = "2024",

journal = "Journal of High Energy Physics",

issn = "1126-6708",

publisher = "Springer Verlag",

number = "10",

}

TY - JOUR

T1 - Measurement of neutrino oscillation parameters with the first six detection units of KM3NeT/ORCA

AU - Aiello, S.

AU - Albert, A.

AU - Alhebsi, A. R.

AU - Alshamsi, M.

AU - Alves Garre, S.

AU - Ambrosone, A.

AU - Ameli, F.

AU - Andre, M.

AU - Aphecetche, L.

AU - Ardid, M.

AU - Ardid, S.

AU - Atmani, H.

AU - Aublin, J.

AU - Badaracco, F.

AU - Bailly-Salins, L.

AU - Bardačová, Z.

AU - Baret, B.

AU - Bariego-Quintana, A.

AU - Becherini, Y.

AU - Bendahman, M.

AU - Benfenati, F.

AU - Benhassi, M.

AU - Bennani, M.

AU - Benoit, D. M.

AU - Berbee, E.

AU - Bertin, V.

AU - Biagi, S.

AU - Boettcher, M.

AU - Bonanno, D.

AU - Bouasla, A. B.

AU - Boumaaza, J.

AU - Bouta, M.

AU - Bouwhuis, M.

AU - Bozza, C.

AU - Bozza, R. M.

AU - Brânzaş, H.

AU - Bretaudeau, F.

AU - Breuhaus, M.

AU - Bruijn, R.

AU - Brunner, J.

AU - Bruno, R.

AU - Buis, E.

AU - Buompane, R.

AU - Busto, J.

AU - Caiffi, B.

AU - Calvo, D.

AU - Capone, A.

AU - Carenini, F.

AU - Thoudam, S.

AU - van Vliet, A.

PY - 2024/10

Y1 - 2024/10

N2 - KM3NeT/ORCA is a water Cherenkov neutrino detector under construction and anchored at the bottom of the Mediterranean Sea. The detector is designed to study oscillations of atmospheric neutrinos and determine the neutrino mass ordering. This paper focuses on an initial configuration of ORCA, referred to as ORCA6, which comprises six out of the foreseen 115 detection units of photo-sensors. A high-purity neutrino sample was extracted, corresponding to an exposure of 433 kton-years. The sample of 5828 neutrino candidates is analysed following a binned log-likelihood method in the reconstructed energy and cosine of the zenith angle. The atmospheric oscillation parameters are measured to be sin2θ23=0.51−0.05+0.04, and Δm312=2.18−0.35+0.25×10−3eV2∪−2.25−1.76×10−3 eV2 at 68% CL. The inverted neutrino mass ordering hypothesis is disfavoured with a p-value of 0.25.

AB - KM3NeT/ORCA is a water Cherenkov neutrino detector under construction and anchored at the bottom of the Mediterranean Sea. The detector is designed to study oscillations of atmospheric neutrinos and determine the neutrino mass ordering. This paper focuses on an initial configuration of ORCA, referred to as ORCA6, which comprises six out of the foreseen 115 detection units of photo-sensors. A high-purity neutrino sample was extracted, corresponding to an exposure of 433 kton-years. The sample of 5828 neutrino candidates is analysed following a binned log-likelihood method in the reconstructed energy and cosine of the zenith angle. The atmospheric oscillation parameters are measured to be sin2θ23=0.51−0.05+0.04, and Δm312=2.18−0.35+0.25×10−3eV2∪−2.25−1.76×10−3 eV2 at 68% CL. The inverted neutrino mass ordering hypothesis is disfavoured with a p-value of 0.25.

KW - Neutrino Detectors and Telescopes (experiments)

KW - Oscillation

UR - https://www.scopus.com/pages/publications/85208733708

U2 - 10.1007/JHEP10(2024)206

DO - 10.1007/JHEP10(2024)206

M3 - Article

AN - SCOPUS:85208733708

SN - 1126-6708

VL - 2024

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 10

M1 - 206

ER -

Measurement of neutrino oscillation parameters with the first six detection units of KM3NeT/ORCA

Abstract

Keywords

Access to Document

OpenUrl availability

Other files and links

Fingerprint

Cite this