CLAS physics database search results Measurement E216M718 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 0.462689 0.112853 0.13356134 27 0.509428 0.0344891 0.04464555 45 0.589607 0.0410574 0.05761644 63 0.602302 0.0282877 0.04671084 81 0.572201 0.0503049 0.0663719 99 0.425502 0.0161156 0.03727042 117 0.391072 0.0148095 0.04598943 135 0.365969 0.0178398 0.03466841 153 0.34 0.01642 0.03147248 171 0.433657 0.0353384 0.04370307