Prompt atmospheric neutrinos and muons: NLO versus LO QCD predictions
- Department of Physics and Astronomy, University of California, Los Angeles, California 90095 (United States)
- Max-Planck-Institut fuer Physik (Werner-Heisenberg-Institut), Foehringer Ring 6, 80805 Muenchen, (Germany)
We compare the leading and next-to-leading order QCD predictions for the flux of atmospheric muons and neutrinos from decays of charmed particles. We find that the full NLO lepton fluxes can be approximated to within {approx}10% by the Born-level fluxes multiplied by an overall factor of 2.2-2.4, which depends slightly on the PDF. This supports the approach of Thunman, Ingelman and Gondolo. We also find that their very low lepton fluxes are due to the mild slope they used for the gluon distribution function at small momentum fractions, and that substantially larger lepton fluxes result when the slope of the gluon distribution function at small momentum fractions is larger. (c) 2000 The American Physical Society.
- OSTI ID:
- 20215264
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 61, Issue 3; Other Information: PBD: 1 Feb 2000; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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