J / psi suppression as evidence for high densities in nuclear collisions - INSPIRE

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J / psi suppression as evidence for high densities in nuclear collisions

Feb, 1993

11 pages

Published in:

Z.Phys.C 61 (1994) 351-356

DOI:

10.1007/BF01413115

Report number:

CERN-TH-6644-93

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Abstract: (Springer)

We determine the hadron density necessary to account forJ/ψ suppression in nuclear collisions by absorption, including the effects of nuclear stopping andJ/ψ formation time. The suppression measured in central 200 GeV/A O-U and S-U collisions cannot be obtained from interactions of theJ/ψ with the primary nucleons alone. Absorption on primary and secondary hadrons can describe these data, however, provided the density of the secondaries is at least 0.8 fm−3, i.e., five times standard nuclear density.

p nucleus: inclusive reaction
nucleus nucleus: inclusive reaction
scattering: heavy ion
heavy ion: scattering
oxygen
sulfur
uranium
central region
time: production
production: time

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