CLAS physics database search results Measurement E216M564 CLAS12 Run Group A Krishna Chandra 2018 psi(p) dsigma/dpsi_pr Stat. error Syst. error deg mcbn/rad mcbn/rad mcbn/rad 18 0.343513 0.026742 0.05919316 54 0.316021 0.021852 0.02965319 90 0.289848 0.0123164 0.02132431 126 0.28698 0.0105357 0.02142588 162 0.320164 0.0103786 0.02421682 198 0.305392 0.0101064 0.02325835 234 0.278886 0.0109073 0.02177015 270 0.272107 0.0112297 0.02246768 306 0.310347 0.0207359 0.02654221 342 0.307413 0.0258995 0.05013327