CLAS physics database search results Measurement E159M396 E1-6 V. Burkert 2001 psi(pi-) dsigma/dpsi_pim Data errors deg mcb/rad mcb/rad 30 0.770751 0.112006 90 0.782837 0.112583 150 0.959459 0.136169 210 0.926211 0.129982 270 0.786916 0.109875 330 0.702122 0.100901