CLAS physics database search results Measurement E216M673 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 0.616959 0.151657 0.13203402 27 0.395476 0.0320658 0.04301685 45 0.465589 0.0312317 0.04738038 63 0.339161 0.0268834 0.03045907 81 0.286754 0.0193213 0.02460874 99 0.245766 0.0265266 0.03337547 117 0.369396 0.0753145 0.07864944 135 0.277419 0.0338436 0.02468267 153 0.282513 0.0272182 0.02663312 171 0.269512 0.0458184 0.045033