Bonn 2020 – scientific programme

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T: Fachverband Teilchenphysik

T 99: Dark Matter IV

T 99.7: Talk

Friday, April 3, 2020, 12:30–12:45, H-HS XIV

Search for low relativistic magnetic monopoles utilizing luminescence light with IceCube* — •Frederik Lauber for the IceCube collaboration — Bergische Universität Wuppertal, Gaußstraße 20, 42119 Wuppertal

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

Due to the predominant usage of Cherenkov light as a detection mechanism and the usage of detection media with a high Cherenkov threshold, in recent years magnetic monopole searches were only conducted in the mild and high relativistic regime (0.5 c − 1 c) or at non relativistic velocities (<0.1 c). This work connects these two regimes by utilizing luminescence light in ice to cover the low relativistic range (0.1 c − 0.5 c). Luminescence becomes the dominant light production mechanism in the low relativistic regime. While the light yield for low charged particles is neglectable in most contexts, highly ionizing particles such as magnetic monopoles have a much higher light yield due to the quadratic nature of the charge dependency of luminescence to the incident particle.

New results on the search for magnetic monopoles in the low relativistic regime utilizing multiple years of IceCube data are presented.

* Gefördert durch die BMBF-Verbundforschung Astroteilchenphysik