CLAS physics database search results Measurement E159M1002 E1-6 V. Burkert 2001 theta(pi-) dsigma/d(−cos(theta_pim)) Data errors deg mcb/rad mcb/rad 9 0.535154 0.158503 27 0.654959 0.144725 45 0.697116 0.123727 63 0.974055 0.160798 81 1.04878 0.183005 99 0.910981 0.164691 117 0.816915 0.173473 135 0.830797 0.210981 153 0.648627 0.141966 171 0.458649 0.162883