Corrections to the Predicitions for Atmospheric Neutrino Observations
Abstract
The theoretical Monte Carlo calculations of the production of neutrinos via cosmic rays incident upon the earth's atmosphere are examined. The calculations are sensitive to the assumed ratio of pi+ / pi- production cross sections; this ratio appears to be underestimated in the theory relative to the experimentally measured ratio. Since the neutrino detection cross section is three times larger than that for the antineutrino, the theoretical predicted detection ratio (numu / nue) is correspondingly too large.
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