CLAS physics database search results Measurement E1M764 E93-006 CLAS experiment V. D. Burkert, M. Ripani 2003 psi(pi+) dsigma/dpsi_pip Stat. error deg mcbn/rad mcbn/rad 36 2.2387376 0.19769064 108 2.9408107 0.1558778 180 3.123893 0.16216803 251.99998 3.0420444 0.16825639 324 2.6275804 0.16003929