Study of the Reaction K++p-->K0+π++p at 1.14 GeV/c
Abstract
We report here the study of the inelastic process K+p-->K0π+p at 1.14 GeV/c [Etot(c.m.)=1.859 GeV]. The study was done using the Saclay 35-cm hydrogen bubble chamber and analyzing events having a V0 two-prong topology in the chamber. The total cross section for the reaction is 4.6+/-0.3 mb. The reaction is dominated by the production of the N33* and K* (888 MeV) resonances. The nonresonating background, if any, contributes less than 0.6 mb to the total cross section. No events were found with two pions in the final state. The cross section for N33* production is 3.6+/-0.5 mb. The K* production cross section (apart from possible interference contributions) is 0.9+/-0.3 mb. Our measured value for the mass of the N33* resonance is 1212+/-8 MeV with a full width of 72+/-13 MeV. A systematic analysis of the production and decay properties of the N33* was made. The N33* is produced with a pronounced spin alignment. Our data are consistent with a complete alignment of +/- 1/2 with respect to the production plane normal or with an alignment of +/-32 with respect to some direction in the production plane, the most probable direction being the direction of the incident K+. No evidence is seen for the existence of the K* (730 MeV) resonance.
- Publication:
-
Physical Review
- Pub Date:
- January 1964
- DOI:
- 10.1103/PhysRev.133.B220
- Bibcode:
- 1964PhRv..133..220B