CLAS physics database search results Measurement E216M828 CLAS12 Run Group A Krishna Chandra 2018 theta(p) dsigma/d(−cos(theta_pr)) Stat. error Syst. error deg mcbn/rad mcbn/rad mcbn/rad 9 0.185925 0.0234199 0.03461205 27 0.201598 0.0265363 0.03411861 45 0.207623 0.0210557 0.02634083 63 0.262612 0.0271913 0.03929779 81 0.338887 0.0238139 0.03156201 99 0.378874 0.0185382 0.03765249 117 0.352 0.018964 0.02926981 135 0.347334 0.0212622 0.02986435 153 0.292384 0.0242073 0.02565149 171 0.309842 0.0406612 0.03276112