CLAS physics database search results Measurement E195M54 CLAS12 RG-K Daniel S. Carman 2022 W P'_x' Data errors Systematic errors GeV 1.64 -0.32818 0.04371 0.01956 1.72 -0.22588 0.02491 0.01491 1.8 -0.22586 0.02673 0.0163 1.88 -0.29108 0.03147 0.01882 1.96 -0.2693 0.04343 0.0269 2.04 -0.13235 0.05939 0.03308 2.12 -0.17535 0.0718 0.03488 2.2 -0.55324 0.10596 0.04363 2.28 -0.28543 0.13169 0.04471 2.36 -0.45642 0.19732 0.0497