CLAS physics database search results Measurement E216M193 CLAS12 Run Group A Krishna Chandra 2018 psi(pi-) dsigma/dpsi_pim Stat. error Syst. error deg mcbn/rad mcbn/rad mcbn/rad 18 0.658646 0.020228 0.09929075 54 0.68234 0.0226525 0.07111654 90 0.713298 0.0162452 0.05663003 126 0.731022 0.0214593 0.05787777 162 0.748428 0.0135734 0.05458266 198 0.760606 0.0250206 0.05595666 234 0.723503 0.0148366 0.05868971 270 0.696665 0.0146507 0.05758897 306 0.765978 0.0360188 0.07914565 342 0.704119 0.0245696 0.10063032