Elsevier

Physics Letters B

Volume 270, Issue 1, 7 November 1991, Pages 105-110
Physics Letters B

J/ψ and muon-pair cross-sections in proton-nucleus and nucleus-nucleus collisions at 200 GeV per nucleon

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Abstract

Muon-pair production has been measured in pCu, pU, OCu, OU and SU collisions at 200 GeV per nucleon. The cross sections are compatible with the atomic number dependence (Aproj.Atarg.)α where α=0.91±0.04 for the J/ψ resonance and α=1.01±0.04 for muon pairs produced in the mass continuum between 1.7 and 2.7 GeV/c2.

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1

Present address: DSM, Saclay, F-91191 Gif-sur-Yvette, France.

2

Also at FCUL, Universidade de Lisboa, P-1700 Lisbon, Portugal.

3

Also at IST, Universidade Técnica de Lisboa, Lisbon, Portugal.

4

Also at ISEL.

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