CLAS physics database search results Measurement E159M149 E1-6 V. Burkert 2001 theta(p) dsigma/d(−cos(theta_pr)) Data errors deg mcb/rad mcb/rad 9 2.80455 0.613981 27 2.98295 0.553319 45 2.47811 0.449812 63 2.48767 0.467871 81 3.78486 0.676738 99 4.43048 0.7453 117 4.55824 0.767086 135 4.19793 0.731759 153 3.52119 0.656324 171 2.86793 0.681282