CLAS physics database search results Measurement E159M210 E1-6 V. Burkert 2001 theta(pi-) dsigma/d(−cos(theta_pim)) Data errors deg mcb/rad mcb/rad 9 3.91807 0.700394 27 4.33648 0.66385 45 3.62321 0.562174 63 3.41631 0.520254 81 3.11137 0.485502 99 2.97269 0.456332 117 3.12809 0.483515 135 3.03185 0.489483 153 3.24494 0.525804 171 3.44568 0.627037