CLAS physics database search results Measurement E159M607 E1-6 V. Burkert 2001 theta(pi+) dsigma/d(−cos(theta_pip)) Data errors deg mcb/rad mcb/rad 9 1.35627 0.263272 27 1.68057 0.289973 45 1.59828 0.290724 63 1.83752 0.283334 81 1.73437 0.261718 99 1.62574 0.23612 117 1.67099 0.252896 135 1.73757 0.405346 153 1.35565 0.918708 171 1.25942 0.954783