CLAS physics database search results Measurement E216M905 CLAS12 Run Group A Krishna Chandra 2018 psi(pi+) dsigma/dpsi_pip Stat. error Syst. error deg mcbn/rad mcbn/rad mcbn/rad 18 0.0349088 0.00834037 0.00590135 54 0.0405409 0.00744565 0.00587203 90 0.0280683 0.00460471 0.00455586 126 0.0405518 0.0072763 0.00564187 162 0.0480803 0.0084227 0.01155377 198 0.0395976 0.00663096 0.00631617 234 0.0349326 0.00652174 0.00617548 270 0.0173048 0.0035603 0.00357858 306 0.0183394 0.00343625 0.00269546 342 0.0194911 0.00345144 0.00288553