CLAS physics database search results Measurement E159M74 E1-6 V. Burkert 2001 psi(p) dsigma/dpsi_pr Data errors deg mcb/rad mcb/rad 30 0.762516 0.12739 90 0.710055 0.120274 150 0.655893 0.110007 210 0.660099 0.109266 270 0.659799 0.104592 330 0.811814 0.137127