CLAS physics database search results Measurement E1M557 E93-006 CLAS experiment V. D. Burkert, M. Ripani 2003 psi(pi+) dsigma/dpsi_pip Stat. error deg mcbn/rad mcbn/rad 36 2.8797455 0.3908239 108 3.0555122 0.19024606 180 4.3047237 0.15116169 251.99998 3.1555166 0.1455953 324 2.7275701 0.21441995