CLAS physics database search results Measurement E159M491 E1-6 V. Burkert 2001 theta(p) dsigma/d(−cos(theta_pr)) Data errors deg mcb/rad mcb/rad 9 0.336604 0.183024 27 0.381404 0.100821 45 0.652507 0.138608 63 0.785882 0.169435 81 0.849599 0.166659 99 1.10312 0.238546 117 1.50448 0.291647 135 1.17595 0.243595 153 1.36629 0.400213 171 1.29005 0.377722