K-Long Facility for JLab and its Scientific Potential

Our main interest in creating a secondary high-quality KL beam is to investigate hyperon spectroscopy through both formation and production processes. We propose to study two body and quasi-two-body reactions induced by the KL beam on the proton target. The experiment should measure both differential cross sections and self-analyzed polarizations of the produced Lambda-, Sigma-, and Xi-hyperons using the GlueX setting at the Jefferson Lab Hall D. New data will greatly constrain partial-wave analysis and reduce model-dependent uncertainties in the extraction of strange resonance properties, providing a new benchmark for comparisons with QCD-inspired models and LQCD calculations. The measurements will span c.m. $\backslash $cos$\backslash $theta from -0.95 to 0.95 in c.m. range above W $=$ 1490 MeV.~