CLAS physics database search results Measurement E159M428 E1-6 V. Burkert 2001 theta(p) dsigma/d(−cos(theta_pr)) Data errors deg mcb/rad mcb/rad 9 2.44914 0.502685 27 2.32654 0.424127 45 1.76524 0.30075 63 1.64099 0.34138 81 2.10354 0.366152 99 2.56718 0.435427 117 2.61328 0.411974 135 2.80576 0.436158 153 3.96489 0.646895 171 4.44749 0.871588