Hyperon-proton scattering experiments with a scintillating fiber detector at KEK

Abstract Hyperon-proton scattering is being studied at KEK in order to obtain a better understanding standing of the baryon-baryon interaction. A scintilating fiber (SCIFI) block detector has been used as a production target of hyperons as well as a target for hyperon scattering on hydrogen. The pilot experiment (E251) for Σ + p scattering has been completed, and the next experiment (E289) for Σ + p, Σ − p and Λp channels has finished its data taking and is now uder analysis.