A measurement of the atmospheric νμ+ν¯μ flux with energies between 1 and 100 GeV is presented. The measurement has been performed using data taken with the first six detection units of the KM3NeT/ORCA detector, referred to as ORCA6. The data were collected between January 2020 and November 2021 and correspond to 510 days of livetime, with a total exposure of 433 kton·years. Using machine learning classification, 3894 neutrino candidate events have been selected with an atmospheric muon contamination of less than 1%. The atmospheric νμ+ν¯μ energy spectrum is derived using an unfolding procedure and the impact of systematic uncertainties is estimated. The atmospheric νμ+ν¯μ flux measured using the ORCA6 configuration is in agreement with the values measured by other experiments.

Measurement of the atmospheric $$\nu _{\mu }$$ flux with six detection units of KM3NeT/ORCA / Null, N., Aiello, S., Albert, A., Alhebsi, A.R., Alshamsi, M., Alves Garre, S., Ambrosone, A., Ameli, F., Andre, M., Aphecetche, L., Ardid, M., Ardid, S., Aublin, J., Badaracco, F., Bailly-Salins, L., Bardačová, Z., Baret, B., Bariego-Quintana, A., Becherini, Y., Bendahman, M., et al.. - In: EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6052. - 85:8(2025). [10.1140/epjc/s10052-025-14513-2]

Measurement of the atmospheric $$\nu _{\mu }$$ flux with six detection units of KM3NeT/ORCA

Bozza, R. M.;Marinelli, A.;Miele, G.;Oliviero, V.;
2025

Abstract

A measurement of the atmospheric νμ+ν¯μ flux with energies between 1 and 100 GeV is presented. The measurement has been performed using data taken with the first six detection units of the KM3NeT/ORCA detector, referred to as ORCA6. The data were collected between January 2020 and November 2021 and correspond to 510 days of livetime, with a total exposure of 433 kton·years. Using machine learning classification, 3894 neutrino candidate events have been selected with an atmospheric muon contamination of less than 1%. The atmospheric νμ+ν¯μ energy spectrum is derived using an unfolding procedure and the impact of systematic uncertainties is estimated. The atmospheric νμ+ν¯μ flux measured using the ORCA6 configuration is in agreement with the values measured by other experiments.
2025
Measurement of the atmospheric $$\nu _{\mu }$$ flux with six detection units of KM3NeT/ORCA / Null, N., Aiello, S., Albert, A., Alhebsi, A.R., Alshamsi, M., Alves Garre, S., Ambrosone, A., Ameli, F., Andre, M., Aphecetche, L., Ardid, M., Ardid, S., Aublin, J., Badaracco, F., Bailly-Salins, L., Bardačová, Z., Baret, B., Bariego-Quintana, A., Becherini, Y., Bendahman, M., et al.. - In: EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6052. - 85:8(2025). [10.1140/epjc/s10052-025-14513-2]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/1043797
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