CLAS physics database search results Measurement E195M95 CLAS12 RG-K Daniel S. Carman 2022 W P'_x Data errors Systematic errors GeV 1.64 -0.03128 0.06189 0.02689 1.72 -0.09358 0.03376 0.01483 1.8 0.03067 0.03439 0.01509 1.88 -0.04033 0.04071 0.01656 1.96 -0.01547 0.04971 0.02048 2.04 -0.01859 0.05386 0.01968 2.12 -0.0739 0.06068 0.01846 2.2 -0.06745 0.06857 0.01745 2.28 -0.01064 0.07753 0.01779 2.36 0.03695 0.08397 0.017