CLAS physics database search results Measurement E159M68 E1-6 V. Burkert 2001 theta(p) dsigma/d(−cos(theta_pr)) Data errors deg mcb/rad mcb/rad 9 0.699657 0.227009 27 1.38062 0.264381 45 1.3317 0.281378 63 1.86279 0.365739 81 2.13317 0.427216 99 2.38837 0.438753 117 2.39071 0.467396 135 3.08142 0.586325 153 2.9246 0.596188 171 2.49627 0.62629