CLAS physics database search results Measurement E195M83 CLAS12 RG-K Daniel S. Carman 2022 W P'_x' Data errors Systematic errors GeV 1.64 -0.09012 0.05619 0.01799 1.72 -0.07718 0.03346 0.01695 1.8 -0.18903 0.03299 0.01952 1.88 -0.15253 0.03604 0.02504 1.96 -0.0977 0.03744 0.02399 2.04 -0.19481 0.0394 0.02338 2.12 -0.15588 0.0434 0.02392 2.2 -0.26006 0.04845 0.0226 2.28 -0.12788 0.05513 0.02043 2.36 -0.18927 0.06538 0.02037