CLAS physics database search results Measurement E159M86 E1-6 V. Burkert 2001 theta(p) dsigma/d(−cos(theta_pr)) Data errors deg mcb/rad mcb/rad 9 0.830567 0.264149 27 1.56268 0.308688 45 1.46397 0.308326 63 1.80336 0.397043 81 1.80638 0.350814 99 2.52371 0.479926 117 2.55259 0.468195 135 3.10868 0.582744 153 3.15491 0.602661 171 2.78331 0.684204