CLAS physics database search results Measurement E216M573 CLAS12 Run Group A Krishna Chandra 2018 psi(p) dsigma/dpsi_pr Stat. error Syst. error deg mcbn/rad mcbn/rad mcbn/rad 18 0.281937 0.0241205 0.04466989 54 0.258719 0.0104845 0.02235992 90 0.239309 0.010368 0.01769438 126 0.238872 0.00905245 0.01726634 162 0.259739 0.0076603 0.0192707 198 0.250476 0.0103363 0.0198307 234 0.241935 0.011911 0.0181393 270 0.251212 0.0115222 0.01859117 306 0.273567 0.0166118 0.0244594 342 0.249178 0.0392691 0.04592502