THE K-L3 FORM-FACTORS AND ATMOSPHERIC NEUTRINO FLAVOR RATIO AT HIGH-ENERGIES

We calculated the differential and total rates for the semileptonic de cays of K-L(0) and K+/- mesons taking into account a linear q(2) depen dence of the K-l3 form factors. As a case in point, we included these rates into the calculation of the atmospheric neutrino flux at energie s 1 to 100 TeV. The calculated neutrino spectra are between the earlie r predictions, while the neutrino flavor ratio, R, is somewhat affecte d by the K-l3 form factors. The R proves to be very sensitive to the c ontribution of neutrinos from decay of charmed particles, providing an additional method to test the charm production models in future exper iments with large-volume neutrino telescopes.