CLAS physics database search results Measurement E209M33 CLAS12 RG-K K+Y recoil polarization Daniel S. Carman 2025 W P^0_y Data errors Systematic errors GeV 1.64 0.1848 0.0487 0.0174 1.72 0.1666 0.0292 0.0174 1.8 0.0956 0.0252 0.0173 1.88 0.043 0.0199 0.0173 1.96 -0.061 0.0189 0.0173 2.04 0.0233 0.0254 0.0173 2.12 0.2961 0.0388 0.0177 2.2 0.2626 0.0485 0.0176 2.28 0.0969 0.0611 0.0173 2.36 0.0384 0.0708 0.0173