CLAS physics database search results Measurement E216M583 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 0.790444 0.0573332 0.09326975 27 0.752246 0.0387527 0.0671097 45 0.75946 0.0336782 0.06436907 63 0.839048 0.0296163 0.06715703 81 0.797389 0.0281948 0.07188054 99 0.796309 0.0447139 0.06621519 117 0.619297 0.0244897 0.05268371 135 0.601657 0.0245427 0.05095676 153 0.626731 0.0323639 0.05702562 171 0.734622 0.0635907 0.09448426