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T: Fachverband Teilchenphysik

T 103: Neutrino Physics without Accelerators 8

T 103.6: Talk

Thursday, March 24, 2022, 17:30–17:45, T-H35

GiBUU based neutrino interaction simulations in KM3NeT — •Johannes Schumann for the ANTARES-KM3NET-ERLANGEN collaboration — Friedrich-Alexander-Universität, Erlangen, Germany

The characteristics of the primary neutrino interaction and the subsequent secondaries determine the reconstruction of the primary neutrino properties in neutrino detection experiments. As part of the evaluation of the detector performances, neutrino interactions are simulated via so-called neutrino generators. In order to reduce the computational complexity, these use different approximations which in turn lead to systematic uncertainties on the science output of the experiments. The use of different neutrino generators can therefore help to understand and reduce the systematic uncertainties associated with the simulation of neutrino interactions. GiBUU is a generator that utilises the Boltzmann-Uehling-Uhlenbeck equation in order to propagate the secondary particles through the nucleus. The KM3BUU software package has been developed to adapt GiBUU simulations to the geometry and data format of the KM3NeT neutrino telescope, which is under construction in the Mediterranean Sea. The current status of KM3BUU and first results obtained with this new software package will be presented.