CLAS physics database search results Measurement E216M527 CLAS12 Run Group A Krishna Chandra 2018 psi(pi+) dsigma/dpsi_pip Stat. error Syst. error deg mcbn/rad mcbn/rad mcbn/rad 18 0.115811 0.006798 0.01276859 54 0.108691 0.00699475 0.01285965 90 0.128708 0.00719748 0.01433503 126 0.151802 0.0278605 0.01828826 162 0.189623 0.0104665 0.01938225 198 0.183793 0.010045 0.02099206 234 0.165004 0.00960295 0.0179634 270 0.115597 0.011388 0.01411785 306 0.12024 0.00796486 0.0129023 342 0.110735 0.00647414 0.01204182