CLAS physics database search results Measurement E216M546 CLAS12 Run Group A Krishna Chandra 2018 psi(p) dsigma/dpsi_pr Stat. error Syst. error deg mcbn/rad mcbn/rad mcbn/rad 18 0.267234 0.0496262 0.03588546 54 0.182479 0.0143111 0.0174074 90 0.143713 0.00748984 0.0111523 126 0.169262 0.00783252 0.01259831 162 0.17481 0.0107027 0.01844047 198 0.167874 0.00813098 0.01291031 234 0.15271 0.00946816 0.01176757 270 0.159554 0.0153699 0.01333527 306 0.184839 0.0114138 0.01618441 342 0.176351 0.0125195 0.02523048