CLAS physics database search results Measurement E159M229 E1-6 V. Burkert 2001 theta(pi+) dsigma/d(−cos(theta_pip)) Data errors deg mcb/rad mcb/rad 9 0.336232 0.107791 27 0.646521 0.114567 45 0.755241 0.11078 63 0.666654 0.0927618 81 0.686911 0.0970864 99 0.729568 0.10597 117 0.514899 0.0793276 135 0.540791 0.165082 153 0.503642 0.322524 171 0.344192 0.349598