Bonn 2020 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 99: Dark Matter IV

T 99.4: Vortrag

Freitag, 3. April 2020, 11:45–12:00, H-HS XIV

Background Estimation for Sub-Relativistic Particles in IceCube — •Jakob Böttcher, Sukeerthi Dharani, Christian Haack, Timo Stürwald, and Christopher Wiebusch for the IceCube collaboration — III. Physikalisches Institut, RWTH Aachen

The IceCube Neutrino Observatory is a multi-purpose detector with research programs encompassing neutrinos, muons, and more exotic particles, such as magnetic monopoles. These monopoles are predicted to catalyse proton decays and, depending on their mass, can propagate with sub-relativistic velocities. To find these slow particles, IceCube has a dedicated trigger that is sensitive to time scales a factor 1000 larger than usual event durations. Since the expected rate of such particles is small, if existent, the estimation of background is crucial for such a search. Explicitly, the challenge lies in simulating correlated noise and low energy atmospheric muons for the long time scales that have to be considered. This talk presents an efficient way to generate and parametrize the background with a data-based approach. This method re-shuffles short snips of actual data and adds de-correlated noise back in by appending to existent launches. The disagreements of this background estimation with data are on a percentage scale.