CLAS physics database search results Measurement E216M365 CLAS12 Run Group A Krishna Chandra 2018 psi(pi+) dsigma/dpsi_pip Stat. error Syst. error deg mcbn/rad mcbn/rad mcbn/rad 18 0.385207 0.0128532 0.0411192 54 0.375071 0.0107462 0.03211035 90 0.385106 0.0149239 0.03136869 126 0.489918 0.0152477 0.03674661 162 0.673043 0.0186059 0.04981291 198 0.677741 0.0209964 0.04979563 234 0.489105 0.012807 0.03618499 270 0.39315 0.0103682 0.03053894 306 0.358303 0.0114496 0.03230142 342 0.368315 0.0201651 0.04106532