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

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 a...

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Bibliographic Details
Published in:arXiv.org 2011-10
Main Authors: Collaboration, CosmoALEPH, Schmelling, M, Hashim, N O, Grupen, C, Luitz, S, Maciuc, F, Mailov, A, A -S Müller, H -G Sander, Schmeling, S, Tcaciuc, R, Wachsmuth, H, Zuber, K
Format: Article
Language:English
Subjects:
Atmospheric models
Computer simulation
Cosmic ray showers
Cosmic rays
Muons
Sea level
Online Access:Get full text
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Summary: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 10^15 eV.
ISSN:2331-8422