CLAS physics database search results Measurement E216M950 CLAS12 Run Group A Krishna Chandra 2018 psi(pi+) dsigma/dpsi_pip Stat. error Syst. error deg mcbn/rad mcbn/rad mcbn/rad 18 0.0576222 0.00544389 0.00757928 54 0.0644727 0.0059893 0.00661729 90 0.0600619 0.0119584 0.00693262 126 0.0866444 0.00932143 0.00954903 162 0.0941686 0.00906835 0.00798821 198 0.0795166 0.0187148 0.00798664 234 0.0891988 0.00927193 0.00819871 270 0.0718969 0.0079649 0.00681496 306 0.0681286 0.00690461 0.00690802 342 0.0620968 0.00722339 0.00800812