Analyzing Power in Large-Angle Proton-Neutron Elastic Scattering

Abstract

The large-angle analyzing power A in proton-neutron elastic scattering at 2, 3, and 6 GeV/c with use of the polarized proton beam at the Argonne zero-gradient synchrotron and a liquid deuterium target have been measured. The measurements, the first at high energy, show that A ia large (20--40%) and negative over much of the angular range and shows no decrease with incident energy, ulike the earlier data at smaller angles.