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T: Fachverband Teilchenphysik

T 61: Methods of astroparticle physics IV

T 61.2: Vortrag

Mittwoch, 1. April 2020, 16:45–17:00, L-3.001

Measurement of luminescence in South Pole ice — •Anna Pollmann for the IceCube collaboration — Universität Wuppertal

The IceCube neutrino observatory uses 1km3 of the natural Antarctic ice near the geographic South Pole as optical detection medium. When charged particles, such as particles produced in neutrino interactions, pass through the ice with relativistic speed, Cherenkov light is emitted. This is detected by IceCube's optical modules and from all these signals a particle signature is reconstructed. A new kind of signature can be detected using light emission from luminescence. This detection channel enables searches for exotic particles (states) which do not emit Cherenkov light and currently cannot be probed by neutrino detectors. For the measurements at IceCube, a 1.7km deep hole was used which vertically overlaps with the glacial ice layers found in the IceCube volume over a range of 350 m. The experiment as well as the measurement results are presented. The impact of the results, which enable new kind of searches for new physics with neutrino telescopes, are discussed.