CLAS physics database search results Measurement E216M645 CLAS12 Run Group A Krishna Chandra 2018 psi(p) dsigma/dpsi_pr Stat. error Syst. error deg mcbn/rad mcbn/rad mcbn/rad 18 0.0775516 0.00833949 0.01385104 54 0.075148 0.00914281 0.0080346 90 0.0688027 0.00724533 0.00923243 126 0.0828997 0.00681777 0.00670123 162 0.0875685 0.00848496 0.0097293 198 0.0851297 0.00873944 0.0069129 234 0.0764195 0.010889 0.00889273 270 0.0604314 0.00599902 0.00581652 306 0.065801 0.00898659 0.01002143 342 0.108735 0.0320376 0.04349583