CLAS physics database search results Measurement E216M835 CLAS12 Run Group A Krishna Chandra 2018 theta(pi-) dsigma/d(−cos(theta_pim)) Stat. error Syst. error deg mcbn/rad mcbn/rad mcbn/rad 9 0.281017 0.0875825 0.04125238 27 0.360726 0.03113 0.03419012 45 0.367209 0.0257667 0.0377184 63 0.343401 0.0222188 0.04491136 81 0.361285 0.0474129 0.0553057 99 0.318936 0.0330052 0.04761441 117 0.238042 0.0165985 0.02479559 135 0.225761 0.0132732 0.02260976 153 0.228936 0.0197189 0.02835393 171 0.248834 0.032124 0.02461831