Inclusive Λ andbar Λ Production in K + p interactions at 70 GeV/c
Abstract
Inclusive and semi-inclusive production of Λ andbar Λ in K + p interactions is studied at an incident momentum of 70 GeV/c. Cross sections and single particle distributions are presented and compared with data at lower energies. Scaling is observed between 32 and 70 GeV/c in the Feynman x variable in the target and the beam fragmentation regions for Λ andbar Λ inclusive production respectively. An increase of Λ (bar Λ) production is observed in the beam (target) fragmentation regions, whereas the data at 70 and 32 GeV/c are reasonably close in the central region. The dependence of the Λ(bar Λ) polarization as a function of x is measured and found to be in general agreement with the results at 32 GeV/c. The (Λbar Λ) pair production cross section increases significantly from 32 to 70 GeV/c. The Λ andbar Λ production associated with an identified proton is also studied.
- Publication:
-
Zeitschrift fur Physik C Particles and Fields
- Pub Date:
- September 1981
- DOI:
- 10.1007/BF01549728
- Bibcode:
- 1981ZPhyC..10..205B