CLAS physics database search results Measurement E159M300 E1-6 V. Burkert 2001 theta(pi-) dsigma/d(−cos(theta_pim)) Data errors deg mcb/rad mcb/rad 9 2.94437 0.513625 27 2.98411 0.444789 45 2.33178 0.338997 63 1.89955 0.266068 81 1.40505 0.190511 99 1.36827 0.201697 117 1.24477 0.180581 135 1.24159 0.181637 153 1.29965 0.197464 171 1.19066 0.220093