CLAS physics database search results Measurement E216M285 CLAS12 Run Group A Krishna Chandra 2018 psi(p) dsigma/dpsi_pr Stat. error Syst. error deg mcbn/rad mcbn/rad mcbn/rad 18 0.368824 0.0248848 0.1264368 54 0.296044 0.0153837 0.02869845 90 0.274658 0.0146578 0.0295639 126 0.241395 0.00988967 0.01867139 162 0.287804 0.0220663 0.03411313 198 0.260205 0.0100938 0.02145431 234 0.25161 0.0204617 0.02804077 270 0.259309 0.0122619 0.02190266 306 0.314994 0.0191337 0.0739178 342 0.423221 0.0564116 0.07306821