$J/ψ$ normal and anomalous suppressions in a hadron and string cascade model

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dc.creatorBen-Hao, Sa
dc.creatorFaessler, Amand
dc.creatorAn, Tai
dc.creatorWaindzoch, T.
dc.creatorFuchs, C.
dc.creatorWang, Z. S.
dc.creatorHui, Wang
dc.date1998-09-08
dc.date1999-02-19
dc.date.accessioned2026-07-07T10:54:49Z
dc.date.available2026-07-07T10:54:49Z
dc.descriptionA mechanism for the effective dissociation of a $c\bar{c}$ pair in the colour electric field of strings is introduced into a hadron and string cascade model, i.e. JPCIAE, which is based on the LUND model, simulating ultra-relativistic nucleus - nucleus collisions. This new mechanism together with the known mechanism of nuclear absorption (both baryons and mesons) could reproduce fairly the data of the normal and anomalous $J/ψ$ suppressions in minimum bias pA, AB (with light projectile), and Pb + Pb collisions at 200 A GeV/c. However the impact parameter (E_T) dependence of the $J/ψ$ suppression factor, both, in S + U and Pb + Pb reactions at 200 A GeV/c and 158 A GeV/c, respectively, is not well reproduced. We also tested the additional mechanism of the energy degradation of leading particles, with which both, the normal and anomalous $J/ψ$ suppressions in minimum bias pA, AB, and Pb + Pb collisions and the E_T dependence of the $J/ψ$ suppression factor are better reproduced.
dc.description16 pages (RevTex), 6 ps-figures, to be published in J. Phys. G
dc.identifierhttps://arxiv.org/abs/nucl-th/9809020
dc.identifierhttp://arxiv.org/abs/nucl-th/9809020
dc.identifierJ.Phys.G25:1123-1133,1999
dc.identifierdoi:10.1088/0954-3899/25/6/302
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/185922
dc.subjectNuclear Theory
dc.title$J/ψ$ normal and anomalous suppressions in a hadron and string cascade model
dc.typetext

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