CLAS physics database search results Measurement E1M643 E93-006 CLAS experiment V. D. Burkert, M. Ripani 2003 psi(pi+) dsigma/dpsi_pip Stat. error deg mcbn/rad mcbn/rad 36 1.9212713 0.11433887 108 2.5728414 0.17270145 180 3.6866264 0.21889277 251.99998 2.9415529 0.18467927 324 2.2257009 0.18168907