CLAS physics database search results Measurement E216M347 CLAS12 Run Group A Krishna Chandra 2018 psi(pi+) dsigma/dpsi_pip Stat. error Syst. error deg mcbn/rad mcbn/rad mcbn/rad 18 0.486629 0.014172 0.05088014 54 0.432694 0.0101432 0.04116872 90 0.488259 0.0151166 0.04035375 126 0.551318 0.0231603 0.04529462 162 0.669704 0.0173278 0.04954103 198 0.710636 0.0318047 0.05366403 234 0.580566 0.0156143 0.04528321 270 0.4697 0.0171858 0.04083357 306 0.417731 0.011599 0.04127218 342 0.459211 0.0109404 0.05046696