CLAS physics database search results Measurement E1M599 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 6.2572718 1.3221054 27 5.7952213 0.87287766 45 6.8274055 0.76242626 63 6.9615107 0.51526165 81 6.9701571 0.53999591 98.99999 6.733531 0.44929597 117 5.2603703 0.36150002 135 4.6453338 0.40702444 153 6.2694607 1.0142405 171 5.853025 0