CLAS physics database search results Measurement E1M654 E93-006 CLAS experiment V. D. Burkert, M. Ripani 2003 psi(pi-) dsigma/dpsi_pim Stat. error deg mcbn/rad mcbn/rad 36 2.2932386 0.14513129 108 2.5861356 0.15888993 180 2.6069438 0.17012621 251.99998 2.8257616 0.20310332 324 2.3160541 0.14583051