CLAS physics database search results Measurement E216M611 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 1.14061 0.0969037 0.09870863 27 0.943934 0.0268711 0.07395771 45 0.841802 0.0224515 0.06475469 63 0.739566 0.0277448 0.05819624 81 0.827885 0.0292456 0.06079691 99 0.769166 0.0290434 0.05491914 117 0.745568 0.0362109 0.05715812 135 0.541534 0.0243972 0.14330163 153 0.458156 0.0349002 0.08149737 171 0.489441 0.00152439 0.26108874