CLAS physics database search results Measurement E1M287 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 7.887135 2.7727818 27 6.6989274 1.859184 45 4.9692826 0.71955782 63 6.2497983 1.3102955 81 4.1169696 0.55087376 98.99999 5.3778834 0.6855998 117 4.2978497 0.51510525 135 4.6225691 0.78819305 153 4.1343217 1.0288743 171 2.9722967 0