CLAS physics database search results Measurement E1M320 E93-006 CLAS experiment V. D. Burkert, M. Ripani 2003 theta(pi+) dsigma/d(−cos(theta_pip)) Stat. error deg mcbn/rad mcbn/rad 9 9.782979 2.3447444 27 8.2923088 1.5449773 45 5.9863572 1.5884688 63 4.2321224 0.64843965 81 2.6186376 0.75992191 98.99999 3.4804952 0.47086054 117 3.1460118 0.37084889 135 2.7094038 0.54708654 153 2.8478484 0.81928897 171 2.3357987 0