A1 Journal article (refereed)
Accessing the gluonic structure of light nuclei at a future electron-ion collider (2020)

Mäntysaari, H., & Schenke, B. (2020). Accessing the gluonic structure of light nuclei at a future electron-ion collider. Physical Review C, 101(1), Article 015203. https://doi.org/10.1103/PhysRevC.101.015203

JYU authors or editors

Publication details

All authors or editors: Mäntysaari, Heikki; Schenke, Björn

Journal or series: Physical Review C

ISSN: 2469-9985

eISSN: 2469-9993

Publication year: 2020

Volume: 101

Issue number: 1

Article number: 015203

Publisher: American Physical Society

Publication country: United States

Publication language: English

DOI: https://doi.org/10.1103/PhysRevC.101.015203

Publication open access: Openly available

Publication channel open access: Partially open access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/67813

Publication is parallel published: https://arxiv.org/abs/1910.03297

Abstract

We show how exclusive vector meson production off light ions can be used to probe the spatial distribution of small-x gluons in the deuteron and 3He wave functions. In particular, we demonstrate how short-range repulsive nucleon-nucleon interactions affect the predicted coherent J/Ψ production spectra. Fluctuations of the nucleon substructure are shown to have a significant effect on the incoherent cross section above |t|≳0.2GeV2. By explicitly performing the Jalilian-Marian–Iancu–McLerran–Weigert–Leonidov–Kovner (JIMWLK) evolution, we predict the x dependence of coherent and incoherent cross sections in the electron-ion collider energy range. In addition to the increase of the average size of the nucleus with decreasing x, both the growth of the nucleons and subnucleonic hot spots are visible in the cross sections. The decreasing length scale of color charge fluctuations with decreasing x is also present, but may not be observable for |t|<1GeV2, if subnucleonic spatial fluctuations are present.

Keywords: particle physics; nuclear physics

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Ministry reporting: Yes

Reporting Year: 2020

JUFO rating: 2