CLAS physics database search results Measurement E1M631 E93-006 CLAS experiment V. D. Burkert, M. Ripani 2003 psi(pi+) dsigma/dpsi_pip Stat. error deg mcbn/rad mcbn/rad 36 2.1857059 0.24708858 108 3.0552235 0.22878543 180 3.4838276 0.16361406 251.99998 2.8268969 0.17497219 324 2.2066467 0.18208443