2007/06/11 by The DELPHI Collaboration, P. Abreu, J. Abdallah +98 · 1 citation
Physics and Astronomy · #Calorimeter (particle physics) #Cosmic ray #Dark Matter and Cosmic Phenomena #Detector #Hadron #High-Energy Particle Collisions Research #Monte Carlo method #Muon #Nuclear physics #Optics #Particle physics #Particle physics theoretical and experimental studies #Physics #astro-ph #hep-ex
paper · pdf · doi:10.1016/j.astropartphys.2007.06.001
published as Astropart.Phys.28:273-286,2007 · 22 pages, 17 figures, Accepted by Astropart. Phys
openalex publication_date 2007/06/11 · arxiv created 2007/06/18 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The DELPHI detector at LEP has been used to measure multi-muon bundles originating from cosmic ray interactions with air. The cosmic events were recorded in ``parasitic mode'' between individual e+e- interactions and the total live time of this data taking is equivalent to 1.6x106 seconds. The DELPHI apparatus is located about 100 metres underground and the 84 metres rock overburden imposes a cut-off of about 52 GeV/c on muon momenta. The data from the large volume Hadron Calorimeter allowed the muon multiplicity of 54201 events to be reconstructed. The resulting muon multiplicity distribution is compared with the prediction of the Monte Carlo simulation based on CORSIKA/QGSJET01. The model fails to describe the abundance of high multiplicity events. The impact of QGSJET internal parameters on the results is also studied.