Abstract
A model of proton-antiproton annihilation via quark rearrangement suggested by Rubinstein and Stern is examined in detail. This model predicts that all final states are three-meson states, made from the set π, η, X, ρ, ω, and allows a computation of their relative rates. Its predictions are compared with experimental data at rest and at several energies in flight. The model is found not to be able to account for more than 25% of the annihilations at rest, event when maximum freedom is given to certain extra parameters. The model underestimates the importance of high-multiplicity states in annihilations, in flight and also fails to predict the more detailed features of these data. A number of interesting aspects of the data are uncovered and possible directions along which the model might be modified are suggested.
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