CLAS physics database search results Measurement E1M618 E93-006 CLAS experiment V. D. Burkert, M. Ripani 2003 psi(pi-) dsigma/dpsi_pim Stat. error deg mcbn/rad mcbn/rad 36 2.4537888 0.18116145 108 2.8826466 0.22159705 180 2.8512075 0.23145637 251.99998 2.6883869 0.1924966 324 2.4326434 0.16584086