CLAS physics database search results Measurement E159M419 E1-6 V. Burkert 2001 theta(p) dsigma/d(−cos(theta_pr)) Stat. error deg mcb/rad mcb/rad 9 2.37729 0.510572 27 2.36647 0.407677 45 1.57463 0.292912 63 1.58774 0.284972 81 2.29822 0.388709 99 2.52744 0.389608 117 2.98435 0.54132 135 3.02441 0.576084 153 3.84355 0.635039 171 4.0046 0.770129