Spectrum and Charge Ratio of Vertical Cosmic Ray Muons up to Momenta of 2.5 TeV/c

2011/10/19 by M. Schmelling, CosmoALEPH Collaboration, N. O. Hashim +26
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Particle Detector Development and Performance #hep-ex

paper · pdf · doi:10.48550/arxiv.1110.4325

4 pages, 3 figures, 1 table

arxiv created 2011/10/19 · openalex publication_date 2011/10/19 · arxiv updated 2011/10/20 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The ALEPH detector at LEP has been used to measure the momentum spectrum and charge ratio of vertical cosmic ray muons underground. The sea-level cosmic ray muon spectrum for momenta up to 2.5 TeV/c has been obtained by correcting for the overburden of 320 meter water equivalent (mwe). The results are compared with Monte Carlo models for air shower development in the atmosphere. From the analysis of the spectrum the total flux and the spectral index of the cosmic ray primaries is inferred. The charge ratio suggests a dominantly light composition of cosmic ray primaries with energies up to 10¹5 eV.

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