CLAS physics database search results Measurement E159M653 E1-6 V. Burkert 2001 theta(p) dsigma/d(−cos(theta_pr)) Data errors deg mcb/rad mcb/rad 9 1.71227 0.448328 27 1.54657 0.318721 45 1.02711 0.227152 63 0.941104 0.221877 81 1.12409 0.195811 99 1.53278 0.2659 117 1.70943 0.313307 135 1.75701 0.311789 153 1.81895 0.320492 171 2.12005 0.49379