CLAS physics database search results Measurement E159M626 E1-6 V. Burkert 2001 theta(p) dsigma/d(−cos(theta_pr)) Data errors deg mcb/rad mcb/rad 9 1.85442 0.470789 27 1.89622 0.388119 45 1.23907 0.246786 63 1.31528 0.269988 81 1.41327 0.264356 99 1.94253 0.331736 117 1.94927 0.356427 135 1.7266 0.342811 153 2.15587 0.465587 171 2.07134 0.457154