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VOLUME 23 (1976) | ISSUE 11 | PAGE 664
Production of new particles in hadron-hadron collisions
The mechanism of ψ-particle production is considered within the framework of the quark-parton model. It is shown that at medium energies the valent quarks play the principle role in the ψ-meson production. The Zweig constant, which is needed for reconciliation with the experimental data on the production, turns out to be larger than the value obtained for the constant from decay data. Possible causes of this disparity are indicated.