CLAS physics database search results Measurement E1M568 E93-006 CLAS experiment V. D. Burkert, M. Ripani 2003 psi(pi-) dsigma/dpsi_pim Stat. error deg mcbn/rad mcbn/rad 36 2.7141399 0.14758687 108 3.2503381 0.47891864 180 3.7342708 0.17541714 251.99998 3.0519693 0.22532998 324 2.8251836 0.17053509