CLAS physics database search results Measurement E1M596 E93-006 CLAS experiment V. D. Burkert, M. Ripani 2003 psi(pi+) dsigma/dpsi_pip Stat. error deg mcbn/rad mcbn/rad 36 1.5577064 0.13692069 108 1.9723233 0.14958327 180 2.9501514 0.14675882 251.99998 1.9807465 0.16008048 324 1.4753594 0.098639838