CLAS physics database search results Measurement E1M309 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 11.141108 3.0017478 27 6.3350725 1.1095427 45 5.7417293 0.91645169 63 4.3788385 0.87297726 81 3.3245809 0.41738451 98.99999 4.5028577 0.52702981 117 3.9636638 0.70635134 135 3.1081669 0.43117478 153 3.633281 0.77945143 171 2.5554895 0