CLAS physics database search results Measurement E216M203 CLAS12 Run Group A Krishna Chandra 2018 psi(pi+) dsigma/dpsi_pip Stat. error Syst. error deg mcbn/rad mcbn/rad mcbn/rad 18 0.664412 0.0290433 0.08187512 54 0.623813 0.0175369 0.07271528 90 0.711039 0.0161069 0.07075323 126 0.794034 0.0181161 0.07058885 162 0.927097 0.0442921 0.08903736 198 0.888785 0.019614 0.07461244 234 0.792757 0.0178128 0.08034374 270 0.67591 0.0148863 0.06735995 306 0.614756 0.0193324 0.06999236 342 0.676786 0.0207828 0.08288692