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A MEASUREMENT OF THE A-DEPENDENCE OF THE J / PSI CROSS-SECTION BY COMPARING DATA ON HYDROGEN AND TUNGSTEN TARGETS AT 39.5-GeV/c

Corden, M.J. ; Dowell, J.D. ; Garvey, J. ; et al.
Phys.Lett.B 110 (1982) 415-418, 1982.
Inspire Record 179825 DOI 10.17182/hepdata.30977

J/ψ production on hydrogen and tungsten targets has been compared at 39.5 GeV/ c and the variation of the A -dependence of the J/ψ cross section as a function of p t 2 and x F has been measured. The A -dependence parameter, α, rises with increasing p t 2 and falls with increasing x F . Both effects are shown not to be due to the Fermi motion of nucleons in the tungsten nucleus.

2 data tables
Table 1

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Table 2

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