Karlsruhe 2011 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 113: Experimentelle Techniken der Astroteilchenphysik V

T 113.8: Vortrag

Freitag, 1. April 2011, 15:50–16:05, 30.95: 001

Results from Hadroproduction in p+C Collisions at the CERN SPS for Understanding of Extensive Air Showers — •Marek Szuba — Karlsruhe Institute of Technology, Karlsruhe, Germany

Analysing extensive air showers resulting from interaction of cosmic particles with the Earth's atmosphere is a major experimental technique of studying high-energy cosmic rays, whose cross-sections are too low for efficient direct detection. Unfortunately, the modeling of many important observables of such showers strongly depends on the applied model of low-energy hadronic interactions, with significant differences between them. It has been shown that many constraints to be applied to these models can be obtained by studying identified-particle spectra from accelerator collisions - in particular at the CERN Super Proton Synchrotron, whose energy range matches well that of final hadroproduction in high-energy EAS observed by such experiments as KASCADE, KASCADE-Grande and Pierre Auger Observatory.

Here we present soon-to-be-published measurements of the pion production cross-section obtained by the NA61/SHINE experiment at the SPS, in proton-carbon collisions at the beam energy of 31 GeV from the year 2007. Further analyses of identified-particle yields in SHINE, in particular with a pion beam, are in preparation.