Würzburg 2018 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 4: Suche nach Physik jenseits des Standardmodels

T 4.8: Vortrag

Montag, 19. März 2018, 17:45–18:00, Philo-HS4

Search for low relativistic magnetic monopoles utilizing luminescence light with the IceCube detector* — •Frederik Lauber for the IceCube collaboration — Bergische Universität Wuppertal, Deutschland

Magnetic monopoles are hypothetical particles predicted by many Beyond the Standard Model theories. They are carriers of single elementary magnetic charge. This work considers intermediate mass monopoles which have been created shortly after the Big Bang.

There is no recent search for the low relativistic range (0.1 c − 0.5 c). This is due to the predominant usage of Cherenkov light as a detection mechanism and the usage of detection media with a Cherenkov threshold above the aforementioned velocity range in current experiments.

However, highly ionizing particles such as magnetic monopoles produce luminescence light in water and ice. While the light yield of this process is much lower in comparison to Cherenkov light, simulations show that IceCube should be capable to detect this light. IceCube also has a large effective detection volume which is needed to detect magnetic monopoles due to the previous flux limits.

An update on the ongoing search in the low relativistic range, utilizing luminescence light as a detection method with IceCube for the first time, is presented. Signal simulation is compared to data, which has been taken with the new monopole filter of IceCube, and background simulation on different cut levels will be shown as well as a set of neural networks to separate background from signal. * Gefördert durch die BMBF-Verbundforschung Astroteilchenphysik