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Abstract:
The CosmoLep experiment at CERN uses the LEP-detectors for measurement of
cosmic ray muons. Results about multi-muon bundles observed in the
ALEPH-detector, which is situated 140 m underground (p_z >= 70
GeV/c), are presented. The observed multiplicity and angular distributions
of the muon events are compared with the air shower Monte Carlo CORSIKA.
The 5 spectacular highest multiplicity events - with densities of about
100 particles over an area of 16 m^2 - cannot easily be described with the
Monte Carlo.
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