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- W2321853408 abstract "We have analyzed the data on $J/ensuremath{psi}$-to-Drell-Yan production cross-section ratios in proton-nucleus ($p+A$) and nucleus-nucleus ($A+A$) collisions, measured by the NA50 Collaboration in the CERN Super Proton Synchrotron energy domain. The adapted version of the two-component QVZ model [J. Qiu, J. P. Vary, and X. Zhang, Nucl. Phys. A 698, 571 (2002); J. Qiu, J. P. Vary, and X. Zhang, Phys. Rev. Lett. 88, 232301 (2002)] has been employed to calculate $J/ensuremath{psi}$ production cross sections. For both $J/ensuremath{psi}$ and Drell-Yan production, nuclear modifications to the free nucleon structure functions are taken into account. In heavy-ion collisions, such modifications are assumed to be proportional to the local nuclear density resulting in centrality-dependent initial state effects. Differences in quark and gluon shadowing lead to a new source of impact parameter dependence of the $J/ensuremath{psi}$-to-Drell-Yan production ratio. For $J/ensuremath{psi}$, the final state interaction of the produced $coverline{c}$ pairs with the nuclear medium is also taken into account. A satisfactory description of the data in both $p+A$ and $A+A$ collisions is obtained. The role of the shadowing corrections is investigated in detail. Model calculations are extrapolated to predict the centrality dependence of the $J/ensuremath{psi}$-to-Drell-Yan ratio in the GSI Facility for Antiproton and Ion Research energy regime." @default.
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- W2321853408 date "2014-04-29" @default.
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- W2321853408 title "Parton shadowing and<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:mrow><mml:mi>J</mml:mi><mml:mo>/</mml:mo><mml:mi>ψ</mml:mi></mml:mrow></mml:math>-to-Drell-Yan ratio in nuclear collisions at energies available at the CERN SPS and the GSI FAIR" @default.
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- W2321853408 doi "https://doi.org/10.1103/physrevc.89.044912" @default.
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