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Dortmund 2021 – scientific programme

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T: Fachverband Teilchenphysik

T 80: Cosmic Rays IV

T 80.4: Talk

Thursday, March 18, 2021, 16:50–17:05, Te

Millicharged Particles in Cosmic Ray Air ShowersRalf Ulrich1, Anatoli Fedynitch2, Tanguy Pierog1, Max Reininghaus1, Antonio Augusto Alves Jr1, and •Maria Pokrandt1 for the CORSIKA 8 collaboration — 1Institute for Astroparticle Physics, KIT — 2Institute for Cosmic Ray Research, the University of Tokyo

Despite its widely appreciated success, there are open questions in the Standard Model (SM) such as potential dark matter particles, the neutrino masses or the anomalous magnetic moment of the muon. Some theories extending the SM suggest the existence of millicharged particles (MCPs) with just a fraction of an electron charge. Such particles are experimentally poorly constraint in the quite interesting mass range from about 1 to 100GeV. Cosmic air showers abundantly produce particles of such energies and are therefore an interesting opportunity to look for the existence of MCPs. In this work, MCPs in the GeV regime are implemented in the powerful air shower simulation tool MCEq (Matrix Cascade Equations) and first results are derived from the resulting simulations. The goal is to obtain competitive exclusion limits for MCPs in that particular mass range.

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