K. Dziunikowska

Inclusive production of meson resonances inK−p interactions at 110GeV/c

AbstractTotal and differential cross sections ofK*−(890),K*−(890),

Fragmentation spectra inK−p interactions at 110 GeV/c

\bar K^{ * 0}

Inclusive ∑±(1385) production inK−p interactions at 110 GeV/c

(890),K*0(890),

Proton fragmentation into pions and pion systems inK−p interactions at 110 GeV/c and comparison to model predictions

\bar K^{ * 0}

Inclusive Σ ± (1385) production in K - p interactions at 110 GeV/c

(1430) andϱ0(770) produced inK−p interactions at 110 GeV/c are presented. The cross sections of the neutral resonances show a smooth increase with energy from 10 to 110 GeV/c incident momentum. For theK*+(890) and theK*0(890), i.e. the resonances with strangenessS=+1, this rise is quite significant: their cross sections practically double between 32 GeV/c and 110 GeV/c incidentK− momentum. About 50% of the neutral kaons and 30% of charged pions produced inK−p interactions at our energy are found to be decay products of the resonances considered.

Polarization of Lambda 0 hyperons in K - p interactions

The distribution with c.m. rapidity,y, of the net charge of hadrons produced inK−p interactions at 110 GeV/c is presented and compared withK−p and π-p data at several energies from 10 to 360 GeV/c. In both reactions and at all energies the net charge changes sign from positive to negative aty∼0. The total net charge in the forward direction is −0.70±0.02 at 110 GeV/c. It decreases with increasing energy and the results are consistent with a total net forward charge of −1.0 at infinite energies. These results imply that the fragments of the beam and target particles are far from being completely separated even at the highest energies available at present accelerators.