CLAS physics database search results Measurement E216M799 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 0.251162 0.0442447 0.04129922 27 0.375653 0.0432104 0.03776898 45 0.30034 0.0384008 0.03533715 63 0.226583 0.0191428 0.02298692 81 0.213071 0.0292009 0.02100714 99 0.190801 0.0173686 0.01922029 117 0.140964 0.0116863 0.01546025 135 0.158117 0.0164181 0.01668649 153 0.165376 0.0230978 0.01849894 171 0.151285 0.0245293 0.04157703