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Latest ALICE results on J/$ψ$ photoproduction in ultra-peripheral collisions at the LHC

by T. Herman

Submission summary

As Contributors: Tomas Herman
Arxiv Link: (pdf)
Date submitted: 2021-07-29 10:03
Submitted by: Herman, Tomas
Submitted to: SciPost Physics Proceedings
Proceedings issue: DIS2021
Academic field: Physics
  • High-Energy Physics - Experiment
  • Nuclear Physics - Experiment


Ultra-peripheral collisions (UPCs), studied using the ALICE detector, allow us to investigate the low-$x$ behavior of the gluon distribution of the colliding particles. Two new measurements of coherent J/$\psi$ photoproduction cross section from Pb-Pb UPCs at $\sqrt{s_{\rm NN}}=5.02$ TeV are presented: the first measurement of the $|t|$-dependence of the cross section providing a new tool to investigate the transverse gluonic structure at low Bjorken-$x$ and a rapidity-differential measurement at midrapidity allowing us to provide stringent constraints on nuclear gluon shadowing and saturation models. In addition, prospects for heavy vector meson photoproduction measurements in LHC Run 3 and 4 are presented.

Current status:
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Submission 2107.13284v1 on 29 July 2021

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