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Conference Paper

The Cosmic Ray Muon Spectrum and Charge Ratio in CosmoALEPH


Schmelling,  Michael
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;


Zuber,  Kai
Prof. Dirk Schwalm, Emeriti, MPI for Nuclear Physics, Max Planck Society;

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Zimmermann, D., Grupen, C., Kotaidis, V., Luitz, S., Mailov, A., Mueller, A.-S., et al. (2004). The Cosmic Ray Muon Spectrum and Charge Ratio in CosmoALEPH.

Cite as: http://hdl.handle.net/11858/00-001M-0000-0011-8BF0-6
The ALEPH experiment at the LEP e+ e- storage ring at CERN has been used to measure the momentum spectrum of cosmic ray muons. ALEPH is located at a vertical depth of 320 m.w.e. underground close to the Jura mountains. The high resolution of the time projection chamber (TPC) of ALEPH allow to reconstruct muon tracks with momenta up to TeV region. The measured muon momentum spectrum and the charge ratio in the range from 80 to 2500 GeV are presented. After corrections for energy loss in the overburden the sea level muon spectrum at nearly vertical incidence is obtained. The experimental data are compared to theoretical expectations and results from other experiments.