CLAS physics database search results Measurement E209M69 CLAS12 RG-K K+Y recoil polarization Daniel S. Carman 2025 W P^0_y Data errors Systematic errors GeV 1.72 -0.952 0.6613 0.0724 1.8 -0.9504 0.4115 0.0724 1.88 -0.0297 0.2705 0.0715 1.96 -0.9584 0.2734 0.0724 2.04 -0.9548 0.3529 0.0724 2.12 -0.8924 0.3873 0.0723 2.2 -0.9529 0.3294 0.0724 2.28 -0.9582 0.3539 0.0724 2.36 -0.9535 0.437 0.0724