A study of strange particle production in νμ charged current interactions in the NOMAD experiment

A study of strangeparticle production in $\nu_\mu$ charged currentinteractions has been performed using the data from the NOMAD experiment. Yields of neutral strangeparticles ($\ko$, $\lam$, $\alam$) have been measured. Mean multiplicities are reported as a function of the event kinematic variables $E_\nu$, $W^2$ and $Q^2$ as well as of the variables describing particle behaviour within a hadronic jet: $x_F$, $z$ and $p_T^2$. Decays of resonances and heavy hyperonswith identified $\ko$ and $\lam$ in the final state have been analyzed. Clear signals corresponding to $\rm {K^\star}^\pm$ $\rm {\Sigma^\star}^\pm$, $\rm \Xi^-$ and $\rm \Sigma^0$ have been observed.