CLAS physics database search results Measurement E1M571 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 11.177671 1.5281385 27 13.633349 1.0094113 45 11.712231 0.81127036 63 9.3521976 0.46876818 81 7.8981404 0.33865371 98.99999 8.5446806 0.32315949 117 9.5832376 0.4331966 135 9.3690596 0.53010947 153 10.04468 1.2875828 171 7.5172377 0.12461446