CLAS physics database search results Measurement E216M278 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 0.917012 0.0935864 0.10367147 27 1.00101 0.0628456 0.08551592 45 1.02704 0.0395754 0.0879429 63 0.946703 0.0319879 0.07520077 81 0.893775 0.0299469 0.0677896 99 0.886988 0.0344246 0.07130582 117 0.863341 0.0304277 0.12440239 135 0.793687 0.0308081 0.20045027 153 0.745934 0.0391272 0.3499652 171 1.13874 0.00722272 0.60295032