CLAS physics database search results Measurement E216M332 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 1.51513 0.08454 0.13049174 27 1.57191 0.0461816 0.13014616 45 1.702 0.0345234 0.13444198 63 1.76231 0.0374811 0.13837029 81 1.77284 0.0864659 0.13542059 99 1.92894 0.0476113 0.14248341 117 1.73913 0.0463772 0.14972364 135 1.43855 0.0517014 0.18905237 153 0.986249 0.0506545 0.29108427 171 1.19283 0.00981084 0.67175122