CLAS physics database search results Measurement E159M363 E1-6 V. Burkert 2001 theta(pi-) dsigma/d(−cos(theta_pim)) Data errors deg mcb/rad mcb/rad 9 2.03895 0.373985 27 2.33023 0.360136 45 2.78443 0.397166 63 3.04637 0.433822 81 2.80886 0.382948 99 2.49082 0.347489 117 2.26149 0.319413 135 2.12078 0.309635 153 2.49447 0.358502 171 2.58322 0.475068