CLAS physics database search results Measurement E1M569 E93-006 CLAS experiment V. D. Burkert, M. Ripani 2003 psi(pi+) dsigma/dpsi_pip Stat. error deg mcbn/rad mcbn/rad 36 2.5247462 0.15272018 108 2.9537251 0.11826764 180 4.2740617 0.15584369 251.99998 2.9731948 0.11493891 324 2.6341403 0.15925987