Münster 2017 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 37: Kosmische Strahlung 4
T 37.7: Vortrag
Dienstag, 28. März 2017, 12:30–12:45, H 4
A test of the existence of primary protons in cosmic rays — •Philipp Heimann1, Kevin Lopata1, Markus Risse1, and Alexey Yushkov2 for the Pierre Auger collaboration — 1Universität Siegen, Department Physik — 2Instituto de Tecnologías en Detección y Astropartículas, Buenos Aires, Argentinien
We present a method to test whether at a certain primary energy, protons exist in the cosmic-ray beam. We introduce a probability measure for air shower events in a sample to be produced by helium, which includes all uncertainties of a detector. If this probability is small one can exclude helium or heavier nuclei as the primary candidates, leading thus to a conservative conclusion that the shower was produced by a primary proton. We show that even a single deep event might be enough to conclude that protons exist in the primary beam up to the event’s energy.
Gefördert durch die BMBF-Verbundforschung Astroteilchenphysik sowie der Helmholtz-Allianz für Astroteilchenphysik.