CLAS physics database search results Measurement E216M423 CLAS12 Run Group A Krishna Chandra 2018 theta(p) dsigma/d(−cos(theta_pr)) Stat. error Syst. error deg mcbn/rad mcbn/rad mcbn/rad 9 0.56184 0.0630909 0.13536257 27 0.523952 0.0320451 0.12164405 45 0.568232 0.0391091 0.08424885 63 0.659525 0.0371654 0.08722904 81 0.666111 0.0309432 0.06601172 99 0.776249 0.0253414 0.06772521 117 0.909674 0.0481958 0.07427957 135 0.914305 0.0352239 0.07304522 153 0.909353 0.0398106 0.07214139 171 0.923547 0.081086 0.09052771