CLAS physics database search results Measurement E216M778 CLAS12 Run Group A Krishna Chandra 2018 psi(pi-) dsigma/dpsi_pim Stat. error Syst. error deg mcbn/rad mcbn/rad mcbn/rad 18 0.0592094 0.0137172 0.01167184 54 0.0462808 0.00717821 0.00589789 90 0.0547392 0.00637716 0.00682754 126 0.0722276 0.00759437 0.00629447 162 0.053032 0.00604232 0.00577545 198 0.0620853 0.00666568 0.00591958 234 0.0620393 0.00649974 0.00540907 270 0.0477418 0.00550137 0.00482379 306 0.0441872 0.00600304 0.00514132 342 0.02379 0.0027323 0.00704927