CLAS physics database search results Measurement E159M977 E1-6 V. Burkert 2001 theta(p) dsigma/d(−cos(theta_pr)) Data errors deg mcb/rad mcb/rad 9 0.407115 0.155014 27 0.504578 0.139154 45 0.464483 0.118375 63 0.825001 0.24068 81 1.09715 0.252386 99 1.01507 0.197936 117 0.926408 0.246649 135 0.989331 0.276643 153 0.632704 0.190144 171 0.445411 0.129243