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Cold Nuclear Matter Effects on J/ψ Yields as a Function of Rapidity and Nuclear Geometry in d+ A Collisions at sqrt [s_ {NN}]= 200 GeV

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Please use this identifier to cite or link to this item: http://hdl.handle.net/1928/20560

Cold Nuclear Matter Effects on J/ψ Yields as a Function of Rapidity and Nuclear Geometry in d+ A Collisions at sqrt [s_ {NN}]= 200 GeV

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Title: Cold Nuclear Matter Effects on J/ψ Yields as a Function of Rapidity and Nuclear Geometry in d+ A Collisions at sqrt [s_ {NN}]= 200 GeV
Author: Fields, Douglas E.; PHENIX Collaboration; Barnes, P. D.; Boissevain, J. G.; Brooks, M. L.; Butsyk, S.; Camacho, C. M.; Constantin, P.; Grim, G.; Jiang, X.; Kapustinsky, J.; Kunde, G. J.; Lee, D. M.; Leitch, M. J.; Liu, H.; Liu, M. X.; McGaughey, P. L.; Palounek, A. P. T.; Purwar, A. K.; Sondheim, W. E.; Van Hecke, H.W.; Bassalleck, B.; Malik, M. D.; Rak, J.; Thomas, T. L.; Younus, I.; Al-Bataineh, H.; Dharmawardane, K.V.; Kyle, G. S.; Papavassiliou, V.; Pate, S. F.; Stepanov, M.; Wang, X. R.
Abstract: We present measurements of J/ψ yields in d+Au collisions at √sNN=200  GeV recorded by the PHENIX experiment and compare them with yields in p+p collisions at the same energy per nucleon-nucleon collision. The measurements cover a large kinematic range in J/ψ rapidity (-2.2<y<2.4) with high statistical precision and are compared with two theoretical models: one with nuclear shadowing combined with final state breakup and one with coherent gluon saturation effects. In order to remove model dependent systematic uncertainties we also compare the data to a simple geometric model. The forward rapidity data are inconsistent with nuclear modifications that are linear or exponential in the density weighted longitudinal thickness, such as those from the final state breakup of the bound state.
Date: 2011-09-27
Publisher: American Physical Society
Citation: Physical review letters, 107(14): 1-7
Description: http://prl.aps.org/pdf/PRL/v107/i14/e142301
URI: http://hdl.handle.net/1928/20560

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