CLAS physics database search results Measurement E1M202 E93-006 CLAS experiment V. D. Burkert, M. Ripani 2003 psi(pi+) dsigma/dpsi_pip Stat. error deg mcbn/rad mcbn/rad 36 1.5356574 0.22989266 108 1.908868 0.29246011 180 2.3361092 0.36773917 251.99998 1.9767427 0.25830004 324 1.7491841 0.36448076