CLAS physics database search results Measurement E216M815 CLAS12 Run Group A Krishna Chandra 2018 psi(pi+) dsigma/dpsi_pip Stat. error Syst. error deg mcbn/rad mcbn/rad mcbn/rad 18 0.0950504 0.00903403 0.01124309 54 0.0827614 0.00567644 0.00836194 90 0.108864 0.00725139 0.01011458 126 0.12912 0.00930201 0.011831 162 0.121249 0.025637 0.01368543 198 0.124815 0.00919449 0.01203361 234 0.125371 0.0100238 0.01266852 270 0.11763 0.00774094 0.01131513 306 0.0947904 0.00682684 0.00923271 342 0.0906217 0.00620278 0.00966944