CLAS physics database search results Measurement E159M158 E1-6 V. Burkert 2001 theta(p) dsigma/d(−cos(theta_pr)) Data errors deg mcb/rad mcb/rad 9 2.55664 0.598883 27 2.63898 0.496393 45 2.41827 0.442592 63 2.13353 0.420325 81 3.66011 0.625898 99 4.19457 0.69366 117 4.00772 0.679453 135 3.99883 0.736076 153 3.79227 0.710249 171 3.67473 0.786417