CLAS physics database search results Measurement E1M238 E93-006 CLAS experiment V. D. Burkert, M. Ripani 2003 psi(pi+) dsigma/dpsi_pip Stat. error deg mcbn/rad mcbn/rad 36 1.5042061 0.27666759 108 1.894478 0.42761773 180 2.3754201 0.28668442 251.99998 2.3456862 0.37996596 324 1.6686099 0.26258704