CLAS physics database search results Measurement E216M908 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 0.11184 0.0411125 0.03005783 27 0.118831 0.0226382 0.01755598 45 0.150401 0.0190695 0.01558146 63 0.105503 0.0143336 0.01041748 81 0.0975959 0.0135516 0.01170924 99 0.119028 0.0214859 0.01773593 117 0.0929987 0.0227509 0.01156018 135 0.0591892 0.0115561 0.04590861 153 0.0539061 0.00055253 0.03973376 171 0.084905 7.355e-05 0.06123909