CLAS physics database search results Measurement E216M626 CLAS12 Run Group A Krishna Chandra 2018 psi(pi+) dsigma/dpsi_pip Stat. error Syst. error deg mcbn/rad mcbn/rad mcbn/rad 18 0.167856 0.00653255 0.01575383 54 0.168133 0.00748859 0.01348174 90 0.177479 0.00629549 0.0135787 126 0.227116 0.0155771 0.01885114 162 0.364406 0.0202366 0.03023084 198 0.325394 0.0125827 0.02595746 234 0.225541 0.008842 0.01822588 270 0.186374 0.00813427 0.01451933 306 0.161483 0.00727646 0.01456484 342 0.17636 0.00665732 0.01649309