CLAS physics database search results Measurement E159M525 E1-6 V. Burkert 2001 theta(pi-) dsigma/d(−cos(theta_pim)) Data errors deg mcb/rad mcb/rad 9 2.4872 0.564064 27 1.97942 0.333612 45 1.69518 0.289345 63 1.3783 0.240416 81 1.06488 0.170602 99 1.24273 0.204248 117 1.27113 0.210382 135 1.06966 0.169699 153 1.15041 0.212034 171 0.977236 0.222386