Inclusive spectra of charged hadrons from ψ and ψ′ decays

The inclusive charged-hadron momentum spectra from the ψ and ψ′ decays produced in e+e- collisions at SPEAR are presented. The data were obtained with a small solid-angle, single-arm magnetic spectrometer with good particle-identification abilities centered at 90 degrees with respect to the beams. The particle-separated invariant cross sections are compared with data from e+e- collisions at √s=4.8 and 7.3 GeV, obtained with the same spectrometer, in order to observe the difference between hadron production at the resonances and in the continuum.