We present new data for the reaction K−p→Ξ−K+ at 3.9-, 4.6-, and 5.0-GeV/c incident momenta. We compare the behavior of K−p→Ξ−K+ with K+p→pK+ backward scattering using a simple model with Reggeized baryon exchange and SU(3).
CROSS SECTION IS NEARLY ALL BACKWARD PRODUCTION.
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Cross sections, mass spectra, angular distributions and several other features of Ξ − and Ω − production from photons and neutrons in K − d interactions at 4.93 GeV/ c are presented. A five standard deviation peak is observed in Ξ K π mass spectra near 2.6 GeV/ c 2 . A sharp rise in the Ξ − three- and four-body cross sections from K − n interactions suggests direct-channel Σ ∗ (3.0–3.5) formation.
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