CLAS physics database search results Measurement E216M177 CLAS12 Run Group A Krishna Chandra 2018 psi(p) dsigma/dpsi_pr Stat. error Syst. error deg mcbn/rad mcbn/rad mcbn/rad 18 0.895936 0.0854562 0.1180541 54 0.751016 0.0315494 0.07344163 90 0.661924 0.0507713 0.06485646 126 0.644544 0.0174385 0.04824199 162 0.675491 0.0153635 0.05404727 198 0.665195 0.0140309 0.05259463 234 0.609263 0.0185417 0.04967553 270 0.649289 0.026955 0.05247318 306 0.787276 0.0770744 0.09161375 342 0.721914 0.0310143 0.10201049