CLAS physics database search results Measurement E159M174 E1-6 V. Burkert 2001 theta(pi-) dsigma/d(−cos(theta_pim)) Data errors deg mcb/rad mcb/rad 9 2.6038 0.492387 27 3.86106 0.619651 45 3.5459 0.553141 63 3.61836 0.542894 81 3.57663 0.546607 99 3.16208 0.491469 117 2.6407 0.406261 135 2.94275 0.472465 153 3.15909 0.509255 171 2.56858 0.468038