CLAS physics database search results Measurement E1M429 E93-006 CLAS experiment V. D. Burkert, M. Ripani 2003 psi(pi+) dsigma/dpsi_pip Stat. error deg mcbn/rad mcbn/rad 36 2.6813221 0.19937922 108 4.0200706 0.21165524 180 5.4543905 0.30406746 251.99998 4.189467 0.23636864 324 2.7250979 0.17216952