Wuppertal 2015 – scientific programme
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T: Fachverband Teilchenphysik
T 50: Kosmische Strahlung III
T 50.9: Talk
Tuesday, March 10, 2015, 18:45–19:00, I.13.65 (HS 26)
A test of the existence of primary protons in cosmic rays — •Philipp Heimann, Markus Risse, and Alexey Yushkov for the Pierre Auger collaboration — Universität Siegen, Siegen
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 the deepest event (the largest Xmax) in a sample to be produced by Helium. If this probability is small one can exclude Helium or heavier nuclei as the primary candidates, the shower was produced by a primary proton. We show that even one single deep event might be enough to conclude that protons exist in the primary beam up to the event’s energy.
Funded by BMBF and DFG.