CLAS physics database search results Measurement E195M51 CLAS12 RG-K Daniel S. Carman 2022 W P'_x' Data errors Systematic errors GeV 1.64 -0.23772 0.0423 0.02142 1.72 -0.19645 0.02273 0.01826 1.8 -0.19933 0.01996 0.01882 1.88 -0.21011 0.02003 0.01939 1.96 -0.19128 0.02093 0.02079 2.04 -0.16795 0.02162 0.02037 2.12 -0.17799 0.02367 0.01985 2.2 -0.21928 0.02699 0.02031 2.28 -0.17476 0.03152 0.01959 2.36 -0.25244 0.03703 0.01833