CLAS physics database search results Measurement E216M648 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 0.201089 0.050918 0.0601843 27 0.1974 0.0225901 0.03896736 45 0.152594 0.0223118 0.02934271 63 0.178656 0.0190002 0.02800909 81 0.227932 0.0599211 0.0464379 99 0.268254 0.0420375 0.07515958 117 0.261725 0.0227384 0.02682451 135 0.319993 0.0241332 0.03096051 153 0.314983 0.0310463 0.03037669 171 0.389424 0.0715481 0.03792687