Hamburg 2016 – scientific programme

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T: Fachverband Teilchenphysik

T 82: Kosmische Strahlung IV

T 82.4: Talk

Wednesday, March 2, 2016, 17:35–17:50, VMP9 SR 29

Investigating the physics performance of air shower universality at the Pierre Auger Observatory — •Ariel Bridgeman, Alexander Schulz, and Markus Roth for the Pierre-Auger collaboration — Karlsruhe Institute of Technology

Recent updates to the air shower universality reconstruction of surface detector data at the Pierre Auger Observatory have reduced the bias and improved the resolution of mass-sensitive variables: the depth of shower maximum and the relative number of muons. For better-informed studies of a possible anisotropy in the arrival direction of ultra-high-energy cosmic rays, a quantification of the power of these parameters to separate a proton-like signal from background is presented. The analysis is furthered with an outlook to the detector*s overall sensitivity to a proton-like signal as well as a projection of our ability to distinguish between different astrophysical flux scenarios.