CLAS physics database search results Measurement E159M327 E1-6 V. Burkert 2001 theta(pi-) dsigma/d(−cos(theta_pim)) Data errors deg mcb/rad mcb/rad 9 3.41928 0.568312 27 4.25824 0.595506 45 3.16734 0.430016 63 3.23405 0.428669 81 2.99157 0.391529 99 2.56404 0.335658 117 2.41599 0.320125 135 2.62211 0.350211 153 2.99459 0.41251 171 2.61116 0.392639