Accessing the gluonic structure of light nuclei at a future electron-ion collider
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
Published inPhysical Review C
© 2020 the Author(s)
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. ...
PublisherAmerican Physical Society
Publication in research information system
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Related funder(s)Academy of Finland; European Commission
Funding program(s)Postdoctoral Researcher, AoF
The content of the publication reflects only the author’s view. The funder is not responsible for any use that may be made of the information it contains.
Additional information about fundingB.P.S. is supported under DOE Contract No. DE-SC0012704. H.M. is supported by the Academy of Finland, project 314764, and by the European Research Council, Grant No. ERC-2015-CoG-681707. H.M. wishes to thank the Nuclear Theory Group at BNL for hospitality during the final stages of this work. This research used resources of the National Energy Research Scientific Computing Center, which is supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231, CSC—IT Center for Science in Espoo, Finland, and the Finnish Grid and Cloud Infrastructure (persistent identifier urn:nbn:fi:research-infras-2016072533). ...
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