CLAS physics database search results Measurement E159M104 E1-6 V. Burkert 2001 theta(p) dsigma/d(−cos(theta_pr)) Data errors deg mcb/rad mcb/rad 9 1.54163 0.395467 27 2.1768 0.423051 45 2.09088 0.402756 63 2.38116 0.434682 81 2.54718 0.456591 99 3.23829 0.575194 117 4.26165 0.770841 135 4.00011 0.733756 153 3.20454 0.651522 171 3.05601 0.657042