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The cross sections for e + e - → hadrons, e + e - , μ + μ - have been measured in the vicinity of the J/ψ resonance using the BES detector operated at BEPC. The partial widths for J/ψ to hadrons, electrons, muons and the total width have been determined to be Γ h = 74.1 ± 8.1 keV, Γ e = 5.14 ± 0.39 keV, Γ μ = 5.13 ± 0.52 keV,...
The dynamics of the collision-induced dissociation of CS +2 molecular ions to CS + and S + fragment ions has been investigated using a crossed-beam tandem hybrid mass spectrometer at collision energies ranging from near threshold to 34.5 eV in the center-of-mass (CM) reference frame. The results show that small impact parameter impulsive collisions are involved in the...
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