Kaon Decay Form Factors and Atmospheric Neutrino Flavor Ratio at High Energies

Details Kaon Decay Form Factors and Atmospheric Neutrino Flavor Ratio at High Energies Kaon Decay Form Factors and Atmospheric Neutrino Flavor Ratio at High Energies

1998-02-24

arxiv.org/abs/hep-ph/9802410v3

Nuovo Cim. A111 (1998) 129-148

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, RevTeX, 8 EPS figures included, minor changes, typos fixed, to appear in Il Nuovo Cimento A

Scientific paper

The dependence of the semileptonic kaon decay form factors on the 4-momentum transfer to the lepton pair causes certain changes in the differential decay rates and, hence, it should affect the conventional atmospheric neutrino flux and neutrino flavour ratio. As a case in point, we included these rates into the calculation of the atmospheric neutrino flux at energies 1 to 100 TeV. The calculated neutrino spectra are between the earlier predictions while the neutrino flavor ratio, R, is somewhat affected by the kaon form factors. The R proves to be very sensitive to the contribution of neutrinos from decay of charmed particles, providing an additional method to test the charm production models in future experiments with large-volume neutrino telescopes.

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