CLAS physics database search results Measurement E1M787 E93-006 CLAS experiment V. D. Burkert, M. Ripani 2003 psi(pi+) dsigma/dpsi_pip Stat. error deg mcbn/rad mcbn/rad 36 2.0822928 0.15418145 108 2.4354227 0.14925382 180 3.1472352 0.1321428 251.99998 2.701328 0.14658743 324 2.3058698 0.18592301