CLAS physics database search results Measurement E159M408 E1-6 V. Burkert 2001 theta(pi-) dsigma/d(−cos(theta_pim)) Stat. error deg mcb/rad mcb/rad 9 3.21076 0.578432 27 2.68204 0.412602 45 3.03528 0.45341 63 2.96351 0.429367 81 2.65844 0.40072 99 2.32664 0.344085 117 2.29114 0.343054 135 2.33181 0.354836 153 2.33982 0.361538 171 2.79869 0.479917