CLAS physics database search results Measurement E216M168 CLAS12 Run Group A Krishna Chandra 2018 psi(p) dsigma/dpsi_pr Stat. error Syst. error deg mcbn/rad mcbn/rad mcbn/rad 18 0.640557 0.0403433 0.0791048 54 0.469246 0.02004 0.04894081 90 0.458946 0.0123213 0.03605724 126 0.438658 0.0135791 0.03629088 162 0.474805 0.0150204 0.03909981 198 0.479972 0.012471 0.03654653 234 0.428095 0.0133754 0.03565933 270 0.46966 0.0147244 0.04529345 306 0.528594 0.0219156 0.04659316 342 0.538842 0.0228976 0.08147965