CLAS physics database search results Measurement E159M48 E1-6 V. Burkert 2001 theta(pi-) dsigma/d(−cos(theta_pim)) Data errors deg mcb/rad mcb/rad 9 2.15278 0.460237 27 2.36421 0.410058 45 2.54594 0.414672 63 2.17103 0.356284 81 2.08736 0.332548 99 1.77938 0.293964 117 1.89172 0.303745 135 2.19923 0.36715 153 1.95438 0.343137 171 1.61034 0.366691