CLAS physics database search results Measurement E209M32 CLAS12 RG-K K+Y recoil polarization Daniel S. Carman 2025 W P^0_y' Data errors Systematic errors GeV 1.64 -0.0862 0.0402 0.0173 1.72 -0.0907 0.0226 0.0173 1.8 -0.0881 0.0167 0.0173 1.88 -0.1179 0.0193 0.0173 1.96 -0.1962 0.0223 0.0175 2.04 -0.2778 0.0252 0.0176 2.12 -0.2235 0.0271 0.0175 2.2 -0.2053 0.0291 0.0175 2.28 -0.1729 0.0321 0.0174 2.36 -0.1672 0.034 0.0174