A1 Journal article (refereed)
Energy dependent nuclear suppression from gluon saturation in exclusive vector meson production (2024)


Mäntysaari, H., Salazar, F., & Schenke, B. (2024). Energy dependent nuclear suppression from gluon saturation in exclusive vector meson production. Physical Review D, 109(7), Article L071504. https://doi.org/10.1103/PhysRevD.109.L071504


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Publication details

All authors or editorsMäntysaari, Heikki; Salazar, Farid; Schenke, Björn

Journal or seriesPhysical Review D

ISSN2470-0010

eISSN2470-0029

Publication year2024

Publication date15/04/2024

Volume109

Issue number7

Article numberL071504

PublisherAmerican Physical Society (APS)

Publication countryUnited States

Publication languageEnglish

DOIhttps://doi.org/10.1103/PhysRevD.109.L071504

Publication open accessOpenly available

Publication channel open accessPartially open access channel

Publication is parallel published (JYX)https://jyx.jyu.fi/handle/123456789/94589

Publication is parallel publishedhttps://arxiv.org/abs/2312.04194

Additional informationLetter


Abstract

We calculate the exclusive J/ψ photoproduction cross section at high energies from the Color Glass Condensate approach. The results are compared to the center-of-mass energy dependent γ+A→J/ψ+A cross sections extracted from measurements in ultra peripheral heavy ion collisions at RHIC and LHC. We predict strong saturation-driven nuclear suppression at high energies, while LHC data prefers even stronger suppression. We explore the effect of nucleon shape fluctuations on the nuclear suppression in the coherent and incoherent cross sections, and show that the most recent measurement of the |t|-differential incoherent J/ψ cross section prefers large event-by-event fluctuations of the nucleon substructure in heavy nuclei, comparable to that found for a free proton.


Keywordsgluonsquantum chromodynamicsparticle physicsnuclear physics


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Ministry reportingYes

Reporting Year2024

Preliminary JUFO rating2


Last updated on 2024-15-06 at 00:46