High-energy reconstruction for single and double cascades using the KM3NeT detector

Abstract

The discovery of a high-energy cosmic neutrino flux has paved the way for the field of neutrino astronomy. For a large part of the flux, the sources remain unidentified. The KM3NeT detector, which is under construction in the Mediterranean sea, is designed to determine their origin. KM3NeT will instrument a cubic kilometre of seawater with photomultiplier tubes that detect Cherenkov radiation from neutrino interaction products with nanosecond precision. For single cascade event signatures, KM3NeT already showed that it can reach degree-level resolutions, greatly increasing the use of these neutrinos for astronomy. In this contribution, we further refine the cascade reconstruction by making a more detailed model of the neutrinos events and including additional information on the hit times. The arrival time of light can be used to improve the identification of double cascade signatures from tau neutrinos, and the angular resolution of both single and double cascade signatures. Sub-degree resolution is achieved in both cases.

arXiv comment10 pages, 5 figures, ICRC 2021 contribution

References in corpus (6)

• Multi-messenger observations of a flaring blazar coincident with high-energy neutrino IceCube-170922A
• Observation and Characterization of a Cosmic Muon Neutrino Flux from the Northern Hemisphere using six years of IceCube data
• Time-integrated Neutrino Source Searches with 10 years of IceCube Data
• High-energy neutrinos in the context of multimessenger physics
• High energy neutrino astrophysics
• Search for astrophysical sources of neutrinos using cascade events in IceCube

Cited by in corpus (1)

• Pseudo-Dirac Neutrinos and Relic Neutrino Matter Effect on the High-energy Neutrino Flavor Composition