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VOLUME 27 (1978) | ISSUE 5 | PAGE 312
4-dependence of the inclusive distributions of the J/ψ particles
We measured the differential cross sections dcr/dx and άσ/ dp] of the inclusive production of //ψ particles by π" mesons with momentum 43 GeV/c from the nuclei Be, Cu, and W. The dependence of the cross sections on the atomic weight A of the nucleus was approximated by the function A a. The exponent a increases with increasing pt2 and is independent of χ within the limits of statistical errors.