CLAS physics database search results Measurement E209M46 CLAS12 RG-K K+Y recoil polarization Daniel S. Carman 2025 W P^0_y' Data errors Systematic errors GeV 1.64 -0.0127 0.0667 0.0173 1.72 -0.1423 0.0321 0.0174 1.8 -0.1726 0.033 0.0174 1.88 -0.0977 0.0391 0.0173 1.96 0.0183 0.0563 0.0173 2.04 -0.1131 0.0807 0.0173 2.12 -0.0713 0.1069 0.0173 2.2 -0.1588 0.1471 0.0174 2.28 0.2432 0.2043 0.0175 2.36 0.1863 0.2986 0.0174