CLAS physics database search results Measurement E159M102 E1-6 V. Burkert 2001 theta(pi-) dsigma/d(−cos(theta_pim)) Data errors deg mcb/rad mcb/rad 9 2.81545 0.551871 27 3.64287 0.593808 45 3.35602 0.519605 63 3.25229 0.508525 81 2.71121 0.415574 99 2.54574 0.400572 117 2.60567 0.41349 135 2.74956 0.436083 153 2.47704 0.416011 171 2.44354 0.470895