CLAS physics database search results Measurement E216M508 CLAS12 Run Group A Krishna Chandra 2018 psi(pi-) dsigma/dpsi_pim Stat. error Syst. error deg mcbn/rad mcbn/rad mcbn/rad 18 0.0779029 0.0140108 0.0166499 54 0.0720854 0.0104251 0.02048004 90 0.0837743 0.00938617 0.0084974 126 0.0995302 0.0117334 0.00854088 162 0.104201 0.00854234 0.00864533 198 0.112525 0.00876593 0.00954692 234 0.110496 0.00925779 0.00965752 270 0.0807349 0.00768377 0.00715745 306 0.0817002 0.0252641 0.01341047 342 0.0823587 0.0112533 0.01744464