CLAS physics database search results Measurement E159M235 E1-6 V. Burkert 2001 psi(pi+) dsigma/dpsi_pip Data errors deg mcb/rad mcb/rad 30 0.232093 0.0324107 90 0.217101 0.031926 150 0.305175 0.0408441 210 0.282924 0.0396624 270 0.218138 0.0301889 330 0.222629 0.0321378