CLAS physics database search results Measurement E209M37 CLAS12 RG-K K+Y recoil polarization Daniel S. Carman 2025 W P^0_y Data errors Systematic errors GeV 1.64 0.1148 0.061 0.0173 1.72 0.3096 0.0348 0.0177 1.8 0.3788 0.0364 0.0179 1.88 0.4898 0.0344 0.0183 1.96 0.3597 0.0386 0.0178 2.04 0.2825 0.0531 0.0176 2.12 0.4559 0.0876 0.0181 2.2 0.5058 0.1397 0.0183 2.28 0.2722 0.1468 0.0176 2.36 0.4725 0.1551 0.0182