CLAS physics database search results Measurement E216M961 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 0.197053 0.0392911 0.03702802 27 0.254357 0.0382584 0.02691451 45 0.241229 0.0281706 0.02259758 63 0.272509 0.0216587 0.02348385 81 0.242563 0.0231314 0.04383964 99 0.240077 0.0266916 0.02192064 117 0.20054 0.0181159 0.0197338 135 0.164697 0.0141245 0.01834432 153 0.17787 0.0250482 0.02872196 171 0.236436 0.0382151 0.04807669