| Article | |
| Title | Recent results on ultra-peripheral collisions at the LHC with ALICE |
| Author(s) | Hosokawa, Ritsuya (Creighton U.) |
| Collaboration | ALICE Collaboration |
| Publication | 2022 |
| Number of pages | 4 |
| In: | PoS PANIC2021 (2022) 254 |
| In: | 22nd Particles and Nuclei International Conference (PANIC 2021), Lisbon, Portugal, 5 - 10 Sep 2021, pp.254 |
| DOI | 10.22323/1.380.0254 |
| Subject category | Nuclear Physics - Experiment ; Particle Physics - Experiment |
| Accelerator/Facility, Experiment | CERN LHC ; ALICE |
| Abstract | Ultra-peripheral collisions (UPCs) of relativistic heavy-ion collisions provide a unique opportunity to study photon induced interactions at the LHC in new kinematic regimes. The ALICE experiment has measured the coherent photo-nuclear production of $\rho^{0}$ and $J/\psi$ vector mesons in UPCs. The measurement of $\rho$ vector meson is an excellent tool to study nuclear shadowing effects and the approach to the black-disc limit of QCD, while the $J/\psi$ measurement is also a good tool to study nuclear shadowing and saturation effects at low-x. In this contribution, recent results obtained with the data from LHC Run2 will be presented. The first measurement of the cross section of $\rho^{0}$ mesons in Xe--Xe at $\sqrt{s_{\mathrm{NN}}}$ = 5.44 TeV and Pb--Pb UPCs at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV, and the cross section and t-dependence of $J/\psi$ mesons in Pb--Pb UPCs at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV will be reported. These results are compared with various model predictions in order to improve our phenomenological understanding of UPCs. |
| Copyright/License | publication: © 2022-2025 the author(s) (License: CC-BY-NC-ND-4.0) |
Corresponding record in: Inspire
Запись создана 2022-10-13, последняя модификация 2022-11-17
