Strange-Particle Production in High-Energy Anti nu and nu Charged-Current Interactions on Protons

摘要

We have studied the semi-inclusive reactions anti nu p implies mu exp + V exp 0 X and nu p implies mu exp - V exp 0 X, and measured the fractional rate for producing one or more neutral strange particles in these reactions to be 0.16 +- 0.03 and 0.15 +- 0.04, respectively. We have observed K exp - (892) and sigma exp - (1385) production in anti nu p scattering at a few percent of the inclusive rate. No evidence for D exp 0 production was seen in the K/sub s/ exp 0 pi exp + pi exp - final state. The distributions in the standard deep-inelastic kinematic variables are presented for events with strange particles and compared to those for the other charged current data. The fragmentation properties of events containing a K/sub s/ exp 0 are in agreement with results from electroproduction experiments, and we have measured integral sub 0 sub 31 exp 0 1/N/sub T/ dn/dz dz/sub dz//sup dN/ dz = 0.029 +- 0.005, which is smaller than the prediction of the Field and Feynman fragmentation model. (ERA citation 07:044922)