CLAS physics database search results Measurement E216M790 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 0.265189 0.0523192 0.03829855 27 0.321526 0.0437717 0.04663489 45 0.248278 0.0274249 0.03201505 63 0.225779 0.027609 0.03774415 81 0.185905 0.0318943 0.02021353 99 0.146405 0.0134363 0.01821136 117 0.0967915 0.00935743 0.01033327 135 0.119687 0.0119934 0.01177117 153 0.130004 0.0149419 0.014815 171 0.10263 0.02097 0.01208988