CLAS physics database search results Measurement E209M51 CLAS12 RG-K K+Y recoil polarization Daniel S. Carman 2025 W P^0_y Stat. error Syst. error GeV 1.64 -0.3275 0.0576 0.0177 1.72 -0.1149 0.0293 0.0173 1.8 -0.0248 0.0272 0.0173 1.88 -0.2374 0.0294 0.0175 1.96 -0.1717 0.0327 0.0174 2.04 -0.1367 0.0352 0.0174 2.12 -0.1092 0.0383 0.0173 2.2 0.0096 0.0438 0.0173 2.28 -0.1002 0.0517 0.0173 2.36 -0.1076 0.0608 0.0173