CLAS physics database search results Measurement E195M62 CLAS12 RG-K Daniel S. Carman 2022 W P'_x Data errors Systematic errors GeV 1.64 -0.00234 0.04568 0.01956 1.72 -0.09001 0.02593 0.01491 1.8 -0.05163 0.02762 0.0163 1.88 -0.0567 0.03306 0.01882 1.96 -0.0105 0.04578 0.0269 2.04 0.13042 0.06137 0.03308 2.12 0.11202 0.07765 0.03488 2.2 -0.21447 0.11098 0.04363 2.28 0.07712 0.13971 0.04471 2.36 0.00538 0.20124 0.0497