CLAS physics database search results Measurement E216M914 CLAS12 Run Group A Krishna Chandra 2018 psi(pi+) dsigma/dpsi_pip Stat. error Syst. error deg mcbn/rad mcbn/rad mcbn/rad 18 0.0228996 0.00357361 0.00278197 54 0.0269566 0.00483367 0.00514028 90 0.0186233 0.012195 0.00312693 126 0.0475276 0.0190111 0.00828824 162 0.040428 0.00647002 0.00468522 198 0.0530095 0.00750247 0.00634023 234 0.0379975 0.0104896 0.00433893 270 0.0279241 0.00805781 0.00464546 306 0.0212562 0.00323392 0.00280777 342 0.0206964 0.0040916 0.00295734