Measurement of optical water properties using stopping muons in KM3NeT/ORCA

Andrey Romanov; Valentin Pestel; KM3NeT collaboration; M. D. Filipović; et al.

doi:10.22323/1.501.1158

Measurement of optical water properties using stopping muons in KM3NeT/ORCA

Andrey Romanov
, Valentin Pestel
, KM3NeT collaboration
, M. D. Filipović
, et al.

School of Science

Normandie Université

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

Abstract

The KM3NeT Collaboration is currently building two neutrino detectors in the Mediterranean Sea. The KM3NeT/ARCA telescope is located off-shore Sicily, Italy, at a depth of about 3.5 km, designed to study cosmic neutrinos. KM3NeT/ORCA is being built off-shore Toulon, France, at a depth of about 2.5 km, with the main physics objective being the determination of the neutrino mass ordering and the precise measurement of oscillation parameters. Optical water properties and light detection efficiency are among the main systematic uncertainties for these objectives. In this work, reconstructed atmospheric muons stopping within KM3NeT/ORCA are studied in order to constrain these uncertainties. Such muons lose energy predominantly through ionisation, which makes them an eligible light source for this study. The improved constraints on these uncertainties will result in better sensitivities in neutrino oscillation studies.

Original language	English
Article number	1158
Number of pages	11
Journal	Proceedings of Science
Volume	501
DOIs	https://doi.org/10.22323/1.501.1158
Publication status	Published - 30 Dec 2025
Event	39th International Cosmic Ray Conference, ICRC 2025 - Geneva, Switzerland Duration: 15 Jul 2025 → 24 Jul 2025

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title = "Measurement of optical water properties using stopping muons in KM3NeT/ORCA",

abstract = "The KM3NeT Collaboration is currently building two neutrino detectors in the Mediterranean Sea. The KM3NeT/ARCA telescope is located off-shore Sicily, Italy, at a depth of about 3.5 km, designed to study cosmic neutrinos. KM3NeT/ORCA is being built off-shore Toulon, France, at a depth of about 2.5 km, with the main physics objective being the determination of the neutrino mass ordering and the precise measurement of oscillation parameters. Optical water properties and light detection efficiency are among the main systematic uncertainties for these objectives. In this work, reconstructed atmospheric muons stopping within KM3NeT/ORCA are studied in order to constrain these uncertainties. Such muons lose energy predominantly through ionisation, which makes them an eligible light source for this study. The improved constraints on these uncertainties will result in better sensitivities in neutrino oscillation studies.",

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T1 - Measurement of optical water properties using stopping muons in KM3NeT/ORCA

AU - Romanov, Andrey

AU - Pestel, Valentin

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AU - al., et

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N2 - The KM3NeT Collaboration is currently building two neutrino detectors in the Mediterranean Sea. The KM3NeT/ARCA telescope is located off-shore Sicily, Italy, at a depth of about 3.5 km, designed to study cosmic neutrinos. KM3NeT/ORCA is being built off-shore Toulon, France, at a depth of about 2.5 km, with the main physics objective being the determination of the neutrino mass ordering and the precise measurement of oscillation parameters. Optical water properties and light detection efficiency are among the main systematic uncertainties for these objectives. In this work, reconstructed atmospheric muons stopping within KM3NeT/ORCA are studied in order to constrain these uncertainties. Such muons lose energy predominantly through ionisation, which makes them an eligible light source for this study. The improved constraints on these uncertainties will result in better sensitivities in neutrino oscillation studies.

AB - The KM3NeT Collaboration is currently building two neutrino detectors in the Mediterranean Sea. The KM3NeT/ARCA telescope is located off-shore Sicily, Italy, at a depth of about 3.5 km, designed to study cosmic neutrinos. KM3NeT/ORCA is being built off-shore Toulon, France, at a depth of about 2.5 km, with the main physics objective being the determination of the neutrino mass ordering and the precise measurement of oscillation parameters. Optical water properties and light detection efficiency are among the main systematic uncertainties for these objectives. In this work, reconstructed atmospheric muons stopping within KM3NeT/ORCA are studied in order to constrain these uncertainties. Such muons lose energy predominantly through ionisation, which makes them an eligible light source for this study. The improved constraints on these uncertainties will result in better sensitivities in neutrino oscillation studies.

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T2 - 39th International Cosmic Ray Conference, ICRC 2025

Y2 - 15 July 2025 through 24 July 2025

ER -

Measurement of optical water properties using stopping muons in KM3NeT/ORCA

Abstract

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