CLAS physics database search results Measurement E216M429 CLAS12 Run Group A Krishna Chandra 2018 psi(p) dsigma/dpsi_pr Stat. error Syst. error deg mcbn/rad mcbn/rad mcbn/rad 18 0.481296 0.0633961 0.07319251 54 0.387674 0.0197127 0.04401522 90 0.320897 0.0161729 0.02735218 126 0.31609 0.0110552 0.02280856 162 0.346308 0.0111532 0.02688061 198 0.326938 0.0106095 0.02554555 234 0.306661 0.0132581 0.02373191 270 0.315925 0.011185 0.0259215 306 0.365017 0.0161857 0.03947637 342 0.383826 0.0244199 0.06195426