CLAS physics database search results Measurement E216M348 CLAS12 Run Group A Krishna Chandra 2018 psi(p) dsigma/dpsi_pr Stat. error Syst. error deg mcbn/rad mcbn/rad mcbn/rad 18 0.509355 0.0332062 0.06742803 54 0.504617 0.0143508 0.04267177 90 0.520792 0.013822 0.03869417 126 0.511059 0.0137673 0.03881458 162 0.56049 0.0158472 0.04377077 198 0.521939 0.0144978 0.04058847 234 0.45561 0.0143902 0.03565134 270 0.501115 0.0130477 0.03665994 306 0.567028 0.0226216 0.04410653 342 0.455186 0.0326853 0.05734938