CLAS physics database search results Measurement E216M806 CLAS12 Run Group A Krishna Chandra 2018 psi(pi+) dsigma/dpsi_pip Stat. error Syst. error deg mcbn/rad mcbn/rad mcbn/rad 18 0.0634966 0.00476077 0.00693077 54 0.0690217 0.0054383 0.0089711 90 0.0868425 0.00637562 0.00804631 126 0.10544 0.00982179 0.00957984 162 0.111051 0.00945483 0.01164081 198 0.133011 0.010715 0.01223458 234 0.0785342 0.0145235 0.00922499 270 0.0768845 0.00593321 0.00731097 306 0.0552942 0.00439654 0.00629502 342 0.0631199 0.00497066 0.0065979