CLAS physics database search results Measurement E159M266 E1-6 V. Burkert 2001 theta(p) dsigma/d(−cos(theta_pr)) Data errors deg mcb/rad mcb/rad 9 0.990619 0.285864 27 0.99587 0.171756 45 1.09001 0.196337 63 1.4513 0.227459 81 1.70204 0.262971 99 2.00507 0.313873 117 2.2413 0.358489 135 2.40215 0.400644 153 1.87896 0.363198 171 1.82291 0.421444