CLAS physics database search results Measurement E216M710 CLAS12 Run Group A Krishna Chandra 2018 theta(pi+) dsigma/d(−cos(theta_pip)) Stat. error Syst. error deg mcbn/rad mcbn/rad mcbn/rad 9 0.47856 0.0397997 0.03964547 27 0.510373 0.0239266 0.0377375 45 0.493263 0.0201322 0.039305 63 0.514878 0.0239368 0.03917496 81 0.570881 0.0218266 0.04698368 99 0.558801 0.0250713 0.04168121 117 0.51053 0.0266488 0.04027878 135 0.401149 0.0296167 0.04885861 153 0.358581 0.0553743 0.09922219 171 0.323125 0.00044456 0.17137963