6533b7dcfe1ef96bd1272091

RESEARCH PRODUCT

Spectrum and charge ratio of vertical cosmic ray muons up to momenta of 2.5 TeV/c

M. SchmellingN.o. HashimC. GrupenS. LuitzF. MaciucA. MailovA.-s. MüllerH.-g. SanderS. SchmelingR. TcaciucH. WachsmuthT. ZieglerK. Zuber

subject

PhysicsSpectral indexMuonPhysics::Instrumentation and DetectorsAstrophysics::High Energy Astrophysical PhenomenaMonte Carlo methodAstrophysics::Instrumentation and Methods for AstrophysicsFOS: Physical sciencesFluxCosmic rayAstronomy and AstrophysicsHigh Energy Physics - ExperimentNuclear physicsMomentumHigh Energy Physics - Experiment (hep-ex)Air showerHigh Energy Physics::ExperimentUltra-high-energy cosmic rayParticle Physics - Experiment

description

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.

10.1016/j.astropartphys.2013.07.008http://dx.doi.org/10.1016/j.astropartphys.2013.07.008