CLAS physics database search results Measurement E216M598 CLAS12 Run Group A Krishna Chandra 2018 psi(pi-) dsigma/dpsi_pim Stat. error Syst. error deg mcbn/rad mcbn/rad mcbn/rad 18 0.210402 0.0213059 0.02849895 54 0.215863 0.0104557 0.01870018 90 0.224849 0.0101263 0.01663838 126 0.267898 0.0104696 0.0192624 162 0.293792 0.00832536 0.02134609 198 0.299062 0.00920397 0.02202756 234 0.250513 0.0102989 0.02018555 270 0.236913 0.0129007 0.01964511 306 0.225479 0.0121158 0.01999014 342 0.194947 0.0113071 0.02113069