Properties of K0 and Λ inclusive production in charged-current antineutrino-nucleon interactions☆

Abstract In this paper we discuss inclusive spectra of K 0 's and Λ's produced in charged in charged-current ν μ N interactions in the Fermilab 15 ft bubble chamber filled with a 64% Ne-H 2 mixture. Data presented in terms of the invariant cross section show, when compared with results from experiments with other incident beams, that the behavior of these distributions is approximately the same. The K 0 and Λ fragmentation functions are presented and the shape of the K 0 fragmentation function is found to be consistent with the parametrization of Field and Feynman. The average K 0 and Λ transverse momentum squared as a function of Q 2 , W 2 , x and z is presented. Comparisons for the K 0 's produced in the current fragmentation region are in qualitative agreement with QCD predictions. The value of the Λ polarization is measured and a positive normal polarization P N = 0.34±0.18 is found.