CLAS physics database search results Measurement E1M286 E93-006 CLAS experiment V. D. Burkert, M. Ripani 2003 psi(pi+) dsigma/dpsi_pip Stat. error deg mcbn/rad mcbn/rad 36 1.2236304 0.18320459 108 1.4974498 0.18006934 180 2.4902656 0.32405648 251.99998 1.5130476 0.18120338 324 1.2864245 0.21245468