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Recent results on ultra-peripheral collisions at the LHC with ALICE

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...

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Autor principal: Hosokawa, Ritsuya
Lenguaje:eng
Publicado: 2022
Materias:
Acceso en línea:https://dx.doi.org/10.22323/1.380.0254
http://cds.cern.ch/record/2836716
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author Hosokawa, Ritsuya
author_facet Hosokawa, Ritsuya
author_sort Hosokawa, Ritsuya
collection CERN
description 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.
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spelling cern-28367162022-11-17T14:24:59Zdoi:10.22323/1.380.0254http://cds.cern.ch/record/2836716engHosokawa, RitsuyaRecent results on ultra-peripheral collisions at the LHC with ALICENuclear Physics - ExperimentParticle Physics - ExperimentUltra-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.oai:cds.cern.ch:28367162022
spellingShingle Nuclear Physics - Experiment
Particle Physics - Experiment
Hosokawa, Ritsuya
Recent results on ultra-peripheral collisions at the LHC with ALICE
title Recent results on ultra-peripheral collisions at the LHC with ALICE
title_full Recent results on ultra-peripheral collisions at the LHC with ALICE
title_fullStr Recent results on ultra-peripheral collisions at the LHC with ALICE
title_full_unstemmed Recent results on ultra-peripheral collisions at the LHC with ALICE
title_short Recent results on ultra-peripheral collisions at the LHC with ALICE
title_sort recent results on ultra-peripheral collisions at the lhc with alice
topic Nuclear Physics - Experiment
Particle Physics - Experiment
url https://dx.doi.org/10.22323/1.380.0254
http://cds.cern.ch/record/2836716
work_keys_str_mv AT hosokawaritsuya recentresultsonultraperipheralcollisionsatthelhcwithalice