CLAS physics database search results Measurement E159M1003 E1-6 V. Burkert 2001 theta(pi+) dsigma/d(−cos(theta_pip)) Data errors deg mcb/rad mcb/rad 9 0.581478 0.209421 27 0.674851 0.198917 45 0.890188 0.257064 63 0.865 0.155212 81 1.01521 0.19063 99 0.928591 0.167462 117 0.837542 0.144928 135 0.846829 0.186971 153 0.589084 0.448279 171 0.665631 0.513578