CLAS physics database search results Measurement E1M630 E93-006 CLAS experiment V. D. Burkert, M. Ripani 2003 psi(pi-) dsigma/dpsi_pim Stat. error deg mcbn/rad mcbn/rad 36 2.4295044 0.14424674 108 2.9720325 0.20166864 180 2.7906375 0.17560068 251.99998 2.9593174 0.19360307 324 2.5651367 0.14516905