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Latest ALICE results on J/$ψ$ photoproduction in ultra-peripheral collisions at the LHC
by T. Herman
Submission summary
| Authors (as registered SciPost users): | Tomas Herman |
| Submission information | |
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| Preprint Link: | https://arxiv.org/abs/2107.13284v1 (pdf) |
| Date accepted: | March 4, 2022 |
| Date submitted: | July 29, 2021, 10:03 a.m. |
| Submitted by: | Tomas Herman |
| Submitted to: | SciPost Physics Proceedings |
| Proceedings issue: | 28th Annual Workshop on Deep-Inelastic Scattering (DIS) and Related Subjects (DIS2021) |
| Ontological classification | |
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| Academic field: | Physics |
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Abstract
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.
Published as SciPost Phys. Proc. 8, 106 (2022)