CLAS physics database search results Measurement E159M50 E1-6 V. Burkert 2001 theta(p) dsigma/d(−cos(theta_pr)) Data errors deg mcb/rad mcb/rad 9 1.21961 0.482094 27 1.82695 0.359672 45 1.18039 0.259489 63 1.6612 0.318132 81 2.56485 0.499516 99 2.70219 0.510218 117 2.71655 0.500661 135 2.90282 0.546206 153 2.82898 0.533238 171 2.12597 0.571186