CLAS physics database search results Measurement E1M679 E93-006 CLAS experiment V. D. Burkert, M. Ripani 2003 psi(pi-) dsigma/dpsi_pim Stat. error deg mcbn/rad mcbn/rad 36 2.6944599 0.22642253 108 2.8313923 0.19423082 180 2.9371669 0.20240903 251.99998 2.8445401 0.18378845 324 2.5598323 0.18323238