CLAS physics database search results Measurement E216M808 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 0.464054 0.061002 0.06802488 27 0.382965 0.0376311 0.03891493 45 0.356769 0.036611 0.0422858 63 0.309907 0.023479 0.02827276 81 0.224482 0.0195936 0.02643259 99 0.224902 0.0379036 0.0259697 117 0.233596 0.0186997 0.02651772 135 0.216572 0.0167163 0.0208133 153 0.21783 0.0214724 0.02189683 171 0.263653 0.036675 0.03330472