Energy dependent nuclear suppression from gluon saturation in exclusive vector meson production

被引：7

作者：

Mantysaari, Heikki ^{[1
,2
]}

Salazar, Farid ^{[3
,4
,5
,6
,7
]}

Schenke, Bjorn ^{[8
]}

机构：

[1] Univ Jyvaskyla, Dept Phys, POB 35, Jyvaskyla 40014, Finland

[2] Univ Helsinki, Helsinki Inst Phys, POB 64, Helsinki 00014, Finland

[3] Univ Washington, Inst Nucl Theory, Seattle, WA 98195 USA

[4] Nucl Sci Div, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA

[5] Univ Calif Berkeley, Phys Dept, Berkeley, CA 94720 USA

[6] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA

[7] Univ Calif Los Angeles, Mani L Bhaumik Inst Theoret Phys, Los Angeles, CA 90095 USA

[8] Phys Dept, Brookhaven Natl Lab, Upton, NY 11973 USA

来源：

PHYSICAL REVIEW D | 2024年 / 109卷 / 07期

基金：

欧盟地平线“2020”;

关键词：

PB-PB COLLISIONS; J/PSI PHOTOPRODUCTION;

D O I：

10.1103/PhysRevD.109.L071504

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We calculate exclusive J/iy photoproduction at high energies in the color glass condensate approach. The results are compared to the center-of-mass energy dependent y + A -> J/iy +A cross sections extracted from measurements in ultraperipheral heavy ion collisions at RHIC and LHC. We predict strong saturation-driven nuclear suppression at high energies, while LHC data prefer even stronger suppression. We explore effects of nucleon shaped fluctuations and show that the most recent measurement of the itidifferential incoherent J/iy cross section prefers large event-by-event fluctuations of the nucleon substructure in heavy nuclei, comparable to that found for a free proton.

引用

页数：8

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