CLAS physics database search results Measurement E159M758 E1-6 V. Burkert 2001 psi(p) dsigma/dpsi_pr Data errors deg mcb/rad mcb/rad 30 0.377276 0.0670616 90 0.317469 0.0538031 150 0.428752 0.0761616 210 0.393042 0.0669381 270 0.345572 0.0569971 330 0.403549 0.0723817