Bonn 2020 – scientific programme

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T: Fachverband Teilchenphysik

T 99: Dark Matter IV

T 99.5: Talk

Friday, April 3, 2020, 12:00–12:15, H-HS XIV

Search for Sub-Relativistic Magnetic Monopoles in IceCube — •Sukeerthi Dharani, Jakob Böttcher, Christian Haack, Timo Stürwald, and Christopher Wiebusch for the IceCube collaboration — III. Physikalisches Institut B, RWTH Aachen University

Grand Unified Theories predict magnetic monopoles as one of the remnants of the very early universe. The IceCube Neutrino Observatory searches for high-energy astrophysical neutrinos as well as exotic particles like magnetic monopoles. A slowly moving (sub-relativistic) magnetic monopole could catalyze nucleon decays in matter via the Rubakov-Callan effect. When passing through the IceCube detector, the decay products of the nucleon produce Cherenkov light along the monopole's track. The experimental signature is a characteristic light pattern which lasts up to milliseconds. In order to separate monopole events from the background, an event selection based on a Boosted Decision Tree has been developed. In this talk, updates on the search for sub-relativistic monopoles are presented.