CLAS physics database search results Measurement E216M412 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 1.19195 0.12381 0.16811745 27 1.05463 0.0832162 0.12812135 45 0.857867 0.0502805 0.0884771 63 0.701421 0.0336684 0.06090021 81 0.611475 0.0313865 0.06291026 99 0.5793 0.0595691 0.05465966 117 0.493462 0.0252083 0.06462705 135 0.497041 0.0306693 0.05029592 153 0.531975 0.0348319 0.09386546 171 0.532472 0.0839451 0.07882663