CLAS physics database search results Measurement E159M257 E1-6 V. Burkert 2001 theta(p) dsigma/d(−cos(theta_pr)) Data errors deg mcb/rad mcb/rad 9 0.495009 0.147075 27 1.09152 0.25433 45 0.924326 0.160932 63 1.0723 0.187557 81 1.63736 0.262433 99 1.61036 0.24561 117 1.69244 0.286761 135 1.94731 0.33828 153 2.0026 0.352941 171 1.43525 0.294711