An analysis of cosmic ray muon neutrino experiments

In view of the likely possibility of a difference between the total cross sections for neutrinos and antineutrinos, it has become more difficult to establish firmly whether and at what energies the total cross section approaches the limiting value. If there is a difference, the lower limit on the mass of the boson, if it exists, will also fall and the possibility of a total inelastic cross section rising continuously with energy is somewhat enhanced. It is clear that firm conclusions must await more precise data from the accelerators. The largest uncertainty at present is the total cross section which has been measured in the CERN experiment up to energies of 10 GeV with some 25% uncertainty and there is also significant uncertainty in the cosmic ray neutrino intensities. (30 refs).