Cross-section estimates are presented for strangeness-changing charged-current reactions ${\nu }_{\mu }N\to \mu Y\pi$, ${\nu }_{\mu }N\to \mu \mathrm{NK}$, ${\overline{\nu }}_{\mu }N\to {\mu }^{+}Y\pi$, and ${\overline{\nu }}_{\mu }N\to {\mu }^{+}\mathrm{NK}$. The reactions are considered within the Cabibbo theory with the current belonging to an octet of SU(3). The calculations are performed using Born approximations for a range of neutrino energies which cover both the Argonne and the Fermilab spectra. We find the flux-averaged cross section for $K^{+}p$ final state to be in rough agreement with the value indicated by the Fermilab data.

• Received 1 December 1980

DOI:https://doi.org/10.1103/PhysRevD.24.2369