CLAS physics database search results Measurement E216M364 CLAS12 Run Group A Krishna Chandra 2018 psi(pi-) dsigma/dpsi_pim Stat. error Syst. error deg mcbn/rad mcbn/rad mcbn/rad 18 0.368692 0.0423369 0.04125923 54 0.37085 0.0161019 0.04567386 90 0.441031 0.0176948 0.03496995 126 0.496161 0.016858 0.03669256 162 0.605533 0.0173975 0.04396807 198 0.590134 0.0126485 0.04330813 234 0.475237 0.0131629 0.03530473 270 0.4546 0.0194591 0.03459328 306 0.387016 0.0161081 0.03319381 342 0.389687 0.0183523 0.04240936