Aachen 2019 – scientific programme

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T: Fachverband Teilchenphysik

T 62: Neutrino-Astronomie II

T 62.7: Talk

Wednesday, March 27, 2019, 17:35–17:50, S14

Seasonal variations of the atmospheric neutrino flux — •Marit Zöcklein, Pascal Backes, Jakob Böttcher, Philipp Fürst, Christian Haack, Patrick Heix, Jöran Stettner, and Christopher Wiebusch for the IceCube collaboration — III. Physikalisches Institut B, RWTH Aachen University

Most neutrinos detected by the IceCube Neutrino Observatory emanate from pion and kaon decays in the Earth's atmosphere. Their flux correlates with the density of the atmosphere and thus with its temperature. Consequently, variations of the atmospheric neutrino flux caused by seasonal temperature variations are observable. The measured correlation can be used to test hadronic interaction models of air shower simulations and improve modeling of the atmospheric neutrino background for the search of cosmic neutrinos. This talk will present a measurement of these seasonal variations. Furthermore, it focuses on the development of a generalized analysis method of the neutrino rate correlation with the atmospheric temperature.