CLAS physics database search results Measurement E216M725 CLAS12 Run Group A Krishna Chandra 2018 psi(pi+) dsigma/dpsi_pip Stat. error Syst. error deg mcbn/rad mcbn/rad mcbn/rad 18 0.129472 0.00754629 0.01172361 54 0.134723 0.0108926 0.01279444 90 0.140185 0.00795968 0.01144088 126 0.159439 0.00831167 0.01325711 162 0.208593 0.0106368 0.01578873 198 0.201441 0.0132396 0.01610122 234 0.179694 0.0113809 0.01456525 270 0.141957 0.00641911 0.01093804 306 0.114586 0.00766433 0.01062824 342 0.121904 0.00549571 0.01109908