Lepton Fluxes from Atmospheric Charm
L. Pasquali, M. H. Reno, I. Sarcevic
Abstract
We reexamine the charm contribution to atmospheric lepton fluxes in the context of perturbative QCD. We include next-to-leading order corrections and discuss theoretical uncertainties due to the extrapolations of the gluon distributions at small-x. We show that the charm contribution to the atmospheric muon flux becomes dominant over the conventional contribution from pion and kaon decays at energies of about 105 GeV. We compare our fluxes with previous calculations.
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