Sigma- p elastic scattering in the region of 400-MeV/c p(Sigma-) less than 700-MeV/c with a scintillating fiber active target

We have performed a hyperon-proton scattering experiment with a scintillating fiber active target. The Σ − p, Λ p and Σ + p scattering have been studied with the same experimental setup. In this paper, we present the differential cross sections of the Σ − p elastic scattering in the momentum region from 400 to 700 MeV /c . This is the first measurement of the Σ − p elastic scattering in the momentum region where the P- and higher waves contributions are important. The present data are in good agreement with the one boson exchange model (Bonn–Julich model A) and the quark cluster model (FSS of Kyoto–Niigata model).