CLAS physics database search results Measurement E159M572 E1-6 V. Burkert 2001 theta(p) dsigma/d(−cos(theta_pr)) Data errors deg mcb/rad mcb/rad 9 1.48855 0.345192 27 1.76767 0.325746 45 1.38171 0.283036 63 1.48685 0.267807 81 1.97246 0.343333 99 2.39696 0.399198 117 2.29189 0.412337 135 2.03263 0.387452 153 1.46099 0.27237 171 1.10806 0.299653