CLAS physics database search results Measurement E216M734 CLAS12 Run Group A Krishna Chandra 2018 psi(pi+) dsigma/dpsi_pip Stat. error Syst. error deg mcbn/rad mcbn/rad mcbn/rad 18 0.12478 0.00529879 0.01112801 54 0.120725 0.00517602 0.01034491 90 0.15058 0.00806541 0.01177908 126 0.182463 0.00840502 0.01326815 162 0.207039 0.0107952 0.01660793 198 0.208914 0.0121909 0.01646604 234 0.17147 0.00747705 0.01316764 270 0.135863 0.00656891 0.01042742 306 0.113876 0.00497667 0.00972583 342 0.102077 0.0150975 0.0107787