CLAS physics database search results Measurement E216M970 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 0.441704 0.0701706 0.06236915 27 0.263036 0.0360381 0.02856857 45 0.339539 0.0316884 0.030638 63 0.323422 0.0296829 0.02835145 81 0.333071 0.0389346 0.03181977 99 0.194572 0.0141086 0.01885698 117 0.166609 0.013741 0.01813871 135 0.16505 0.0288087 0.01971859 153 0.179768 0.020204 0.02440515 171 0.199953 0.0331876 0.03612809