CLAS physics database search results Measurement E216M691 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 0.583736 0.0527355 0.07807312 27 0.579422 0.0493331 0.08457519 45 0.558192 0.0329463 0.05363592 63 0.574846 0.0259836 0.0526874 81 0.599423 0.0294939 0.05485409 99 0.618836 0.0408126 0.05571384 117 0.510103 0.0229178 0.04483903 135 0.480624 0.0253819 0.0419309 153 0.450389 0.0395427 0.04189129 171 0.502325 0.0626187 0.05098316