14 research outputs found
Strangeness Suppression in Proton-Proton Collisions
We analyse strangeness production in proton-proton (pp) collisions at SPS and
RHIC energies, using the recently advanced NeXus approach. After having
verified that the model reproduces well the existing data, we interpret the
results: strangeness is suppressed in proton-proton collisions at SPS energy as
compared to electron-positron (e+e-) annihilation due to the limited masses of
the strings produced in the reaction, whereas high energy pp and e+e-
collisions agree quantitatively . Thus strangeness suppression at SPS energies
is a consequence of the limited phase-space available in string fragmentation.Comment: 7 Figures, 4 Page
Spectra and correlations of Lambda and (Lambda)over-bar produced in 340-GeV/c Sigma(-)+C and 260-GeV/c n+C interactions
We have measured the production of strange baryons and antibaryons in 340-GeV/c Sigma /sup -/+C and 260-GeV/c n+C interactions. The single x/sub F/ distributions show the expected leading particle effect, and the single p/sub t//sup 2/ distributions show a distinct nonthermal behavior. The x/sub F/ distributions of Lambda - Lambda pairs indicate two different phase space distributions for the two coincident baryons. On the other hand two Lambda 's show identical distributions. Momentum conservation during the formation process may represent a significant source for the observed behavior