CLAS physics database search results Measurement E195M81 CLAS12 RG-K Daniel S. Carman 2022 W P'_x' Data errors Systematic errors GeV 1.64 0.00454 0.06944 0.01497 1.72 -0.14934 0.04055 0.01599 1.8 -0.08581 0.03975 0.02043 1.88 -0.24253 0.03584 0.01999 1.96 -0.26869 0.03639 0.01981 2.04 -0.18181 0.04813 0.02425 2.12 -0.18662 0.06814 0.03093 2.2 -0.14582 0.0911 0.03813 2.28 0.03696 0.10234 0.03574 2.36 -0.08338 0.10864 0.03002