A study of the reactions K-p → K0π-p and K-p → K*-(890) p at 8.25 GeV/c

Abstract

A variation of the model proposed by Plahte and Roberts is used to fit data from the reaction K-p → K0π-p at 8.25 GeV/c. The channel K-p → K*-p is also studied in some detail and the energy dependence of the cross section is discussed. The behaviour of the differential cross sections and of the density matrix elements of K* in the G-J frame as function of t' suggests dominance of vector exchange with a small π-exchange contribution. The density matrix elements are also given in the helicity fram and a fit to the Harari model supports the dominance of natural-parity exchange and of the helicity non-flip amplitude at the nucleon vertex. © 1973