CLAS physics database search results Measurement E159M354 E1-6 V. Burkert 2001 theta(pi-) dsigma/d(−cos(theta_pim)) Data errors deg mcb/rad mcb/rad 9 2.91111 0.518316 27 3.03954 0.458919 45 3.22258 0.457532 63 3.00183 0.399942 81 3.09999 0.417 99 2.94446 0.419361 117 2.71454 0.387881 135 2.71045 0.382146 153 2.94876 0.422562 171 2.6267 0.440379