CLAS physics database search results Measurement E209M29 CLAS12 RG-K K+Y recoil polarization Daniel S. Carman 2025 W P^0_y' Data errors Systematic errors GeV 1.64 -0.1931 0.0582 0.0174 1.72 -0.4087 0.034 0.018 1.8 -0.4192 0.0345 0.018 1.88 -0.4144 0.0331 0.018 1.96 -0.0532 0.0377 0.0173 2.04 0.1101 0.0526 0.0173 2.12 0.2613 0.0877 0.0176 2.2 0.4616 0.1385 0.0182 2.28 0.4835 0.1426 0.0182 2.36 0.3841 0.1577 0.0179