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Particle physics at the Pierre Auger Observatory
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SYSNO ASEP 0441439 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Particle physics at the Pierre Auger Observatory Author(s) Ebr, Jan (FZU-D) RID, ORCID Source Title MESON 2014 - International Workshop on Meson Production, Properties and Interaction /13./. - Les Ulis : EDP Sciences, 2014 / Magiera A. ; Stroher H. ; Wronska A. ; Guaraldo C. - ISSN 2100-014X Pages "01021-1"-"01021-6" Number of pages 6 s. Publication form Online - E Action MESON 2014 - International Workshop on Meson Production, Properties and Interaction Event date 29.05.2014-03.06.2014 VEvent location Kraków Country PL - Poland Event type WRD Language eng - English Country FR - France Keywords Pierre Auger Observatory ; ultra-high energy ; hadronic interactions Subject RIV BF - Elementary Particles and High Energy Physics R&D Projects LG13007 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) 7AMB14AR005 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) GA14-17501S GA ČR - Czech Science Foundation (CSF) Institutional support FZU-D - RVO:68378271 EID SCOPUS 84915757225 DOI 10.1051/epjconf/20148101021 Annotation The Pierre Auger Observatory is the largest detector of ultra-high energy cosmic rays (UHECR) in the world. These particles initiate extensive air showers which can be detected by sampling the particles at ground level or observing the fluorescence light in the atmosphere - the Pierre Auger Observatory employs both these techniques. As the center-of-mass energies of the first interactions in the showers can be several orders of magnitude beyond the reach of the LHC, the UHECR provide an unique opportunity to study hadronic interactions. While the uncertainty in modeling these interactions is somewhat degenerate with the unknown composition of the primary beam, interaction models can be tested using data such as the depths of the maxima of the longitudinal development of the showers or their muon content. Moreover, using careful data selection, proton-air cross section at the c.m.s. energy of 57 TeV per nucleon-nucleon pair can be obtained. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2015
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