CLAS physics database search results Measurement E195M91 CLAS12 RG-K Daniel S. Carman 2022 W P'_x Data errors Systematic errors GeV 1.64 -0.13068 0.05434 0.01799 1.72 -0.0933 0.0319 0.01695 1.8 -0.01483 0.03286 0.01952 1.88 0.01743 0.03663 0.02504 1.96 -0.03346 0.03851 0.02399 2.04 0.0801 0.04064 0.02338 2.12 0.08227 0.04449 0.02392 2.2 -0.01785 0.04945 0.0226 2.28 -0.02654 0.05596 0.02043 2.36 -0.08034 0.06542 0.02037