CLAS physics database search results Measurement E159M1039 E1-6 V. Burkert 2001 theta(pi+) dsigma/d(−cos(theta_pip)) Data errors deg mcb/rad mcb/rad 9 0.574195 0.198367 27 0.645724 0.173388 45 0.586254 0.165748 63 0.640844 0.105275 81 0.939121 0.187115 99 0.725757 0.130184 117 0.753437 0.162275 135 0.632283 0.185125 153 0.656329 0.48512 171 0.618509 0.507305