CLAS physics database search results Measurement E216M653 CLAS12 Run Group A Krishna Chandra 2018 psi(pi+) dsigma/dpsi_pip Stat. error Syst. error deg mcbn/rad mcbn/rad mcbn/rad 18 0.0647222 0.00600352 0.00762372 54 0.0659287 0.00663292 0.00817844 90 0.0814102 0.013381 0.00847678 126 0.106524 0.00763219 0.01086444 162 0.1143 0.0136554 0.01224184 198 0.137563 0.0202451 0.02104608 234 0.0845897 0.00798128 0.00947688 270 0.0824562 0.00795492 0.00948253 306 0.0649283 0.005249 0.00756445 342 0.0662762 0.0051827 0.00722822