CLAS physics database search results Measurement E159M371 E1-6 V. Burkert 2001 psi(p) dsigma/dpsi_pr Data errors deg mcb/rad mcb/rad 30 0.819 0.127067 90 0.847222 0.128647 150 0.909513 0.134128 210 0.893051 0.143479 270 0.807966 0.119338 330 0.886788 0.136491