CLAS physics database search results Measurement E159M337 E1-6 V. Burkert 2001 theta(pi+) dsigma/d(−cos(theta_pip)) Data errors deg mcb/rad mcb/rad 9 3.17181 0.515451 27 4.54433 0.638722 45 3.8912 0.533748 63 3.82971 0.498439 81 3.83953 0.486066 99 4.13243 0.526952 117 4.08455 0.531832 135 3.26663 0.641675 153 2.73832 1.69037 171 2.8123 1.64068