  In this work we study the $\Sigma\pi$ and $\Lambda\pi$ production off free
nucleons driven by the strangeness-changing weak charged current. We calculate
the total cross sections for all possible channels and estimate the
flux-averaged total cross sections for experiments like MiniBooNE, SciBooNE,
T2K, and Minerva. The model is based on the lowest order effective SU(3) chiral
Lagrangians in the presence of an external weak charged current and contains
Born and the lowest-lying decuplet resonant mechanisms that can contribute to
these reaction channels. We also compare and discuss our results with others
following similar and very different approaches.
