CLAS physics database search results Measurement E159M77 E1-6 V. Burkert 2001 theta(p) dsigma/d(−cos(theta_pr)) Data errors deg mcb/rad mcb/rad 9 0.911273 0.333394 27 1.54073 0.324556 45 1.36323 0.312191 63 1.56667 0.30922 81 2.06685 0.398138 99 2.76647 0.521669 117 2.63432 0.493142 135 2.97526 0.556235 153 3.0469 0.573298 171 2.87106 0.629468