CLAS physics database search results Measurement E209M41 CLAS12 RG-K K+Y recoil polarization Daniel S. Carman 2025 W P^0_y' Data errors Systematic errors GeV 1.64 -0.2295 0.0657 0.0175 1.72 -0.3207 0.039 0.0177 1.8 -0.3238 0.0382 0.0177 1.88 -0.1158 0.0314 0.0173 1.96 0.2516 0.0309 0.0176 2.04 0.2186 0.0413 0.0175 2.12 0.1667 0.0636 0.0174 2.2 0.3452 0.0803 0.0178 2.28 0.2402 0.0993 0.0175 2.36 0.282 0.1092 0.0176