CLAS physics database search results Measurement E209M10 CLAS12 RG-K K+Y recoil polarization Daniel S. Carman 2025 cos(theta_K^c.m.) P^0_y Data errors Systematic errors -0.96 0.6798 0.1504 0.0578 -0.88 0.3336 0.0346 0.0714 -0.8 0.1891 0.0238 0.067 -0.72 0.1505 0.0222 0.047 -0.64 0.0489 0.0221 0.0366 -0.56 -0.0314 0.0226 0.023 -0.48 -0.0692 0.0231 0.0386 -0.4 -0.0701 0.0232 0.0182 -0.32 -0.2254 0.024 0.0199 -0.24 -0.2727 0.0239 0.0156 -0.16 -0.2645 0.0237 0.0152 -0.08 -0.314 0.023 0.0141 0 -0.3514 0.0225 0.0214 0.08 -0.3989 0.0214 0.0128 0.16 -0.3855 0.0209 0.011 0.24 -0.3626 0.0198 0.0132 0.32 -0.3406 0.0191 0.0313 0.4 -0.3998 0.0174 0.0148 0.48 -0.4413 0.0163 0.031 0.56 -0.441 0.0146 0.0224 0.64 -0.4578 0.0138 0.0209 0.72 -0.5137 0.0128 0.0147 0.8 -0.5212 0.0121 0.0292 0.88 -0.5335 0.0141 0.026 0.96 -0.5848 0.0167 0.0178