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J/ψ photoproduction in ultra-peripheral Pb-Pb and p-Pb collisions with the ALICE detector

Ultra-relativistic heavy ions generate strong electromagnetic fields which offer the possibility to study gamma-gamma, gamma-nucleus and gamma-proton processes at the LHC in ultra-peripheral Pb-Pb and p-Pb collisions (UPC). Exclusive photoproduction of J/ψ vector mesons is sensitive to the gluon dis...

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Autor principal: Adam, Jaroslav
Lenguaje:eng
Publicado: 2016
Materias:
Acceso en línea:https://dx.doi.org/10.1016/j.nuclphysbps.2015.10.002
http://cds.cern.ch/record/2276598
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author Adam, Jaroslav
author_facet Adam, Jaroslav
author_sort Adam, Jaroslav
collection CERN
description Ultra-relativistic heavy ions generate strong electromagnetic fields which offer the possibility to study gamma-gamma, gamma-nucleus and gamma-proton processes at the LHC in ultra-peripheral Pb-Pb and p-Pb collisions (UPC). Exclusive photoproduction of J/ψ vector mesons is sensitive to the gluon distribution of the interacting target (proton or nucleus). This process is expected to be sensitive to saturation phenomena and nuclear gluon shadowing. Here we report on the ALICE measurement of J/ψ coherent photoproduction in Pb-Pb UPC at sNN=2.76 TeV at forward and central rapidities. Furthermore, we also present results on the J/ψ photoproduction in p-Pb UPC at sNN=5.02 TeV in the forward and backward rapidities, where the rapidity is measured in the laboratory frame with respect to the proton beam direction. The J/ψ mesons have been identified through their leptonic decays.
id oai-inspirehep.net-1467688
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2016
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spelling oai-inspirehep.net-14676882021-05-04T07:18:18Zdoi:10.1016/j.nuclphysbps.2015.10.002http://cds.cern.ch/record/2276598engAdam, JaroslavJ/ψ photoproduction in ultra-peripheral Pb-Pb and p-Pb collisions with the ALICE detectorNuclear Physics - ExperimentUltra-relativistic heavy ions generate strong electromagnetic fields which offer the possibility to study gamma-gamma, gamma-nucleus and gamma-proton processes at the LHC in ultra-peripheral Pb-Pb and p-Pb collisions (UPC). Exclusive photoproduction of J/ψ vector mesons is sensitive to the gluon distribution of the interacting target (proton or nucleus). This process is expected to be sensitive to saturation phenomena and nuclear gluon shadowing. Here we report on the ALICE measurement of J/ψ coherent photoproduction in Pb-Pb UPC at sNN=2.76 TeV at forward and central rapidities. Furthermore, we also present results on the J/ψ photoproduction in p-Pb UPC at sNN=5.02 TeV in the forward and backward rapidities, where the rapidity is measured in the laboratory frame with respect to the proton beam direction. The J/ψ mesons have been identified through their leptonic decays.oai:inspirehep.net:14676882016
spellingShingle Nuclear Physics - Experiment
Adam, Jaroslav
J/ψ photoproduction in ultra-peripheral Pb-Pb and p-Pb collisions with the ALICE detector
title J/ψ photoproduction in ultra-peripheral Pb-Pb and p-Pb collisions with the ALICE detector
title_full J/ψ photoproduction in ultra-peripheral Pb-Pb and p-Pb collisions with the ALICE detector
title_fullStr J/ψ photoproduction in ultra-peripheral Pb-Pb and p-Pb collisions with the ALICE detector
title_full_unstemmed J/ψ photoproduction in ultra-peripheral Pb-Pb and p-Pb collisions with the ALICE detector
title_short J/ψ photoproduction in ultra-peripheral Pb-Pb and p-Pb collisions with the ALICE detector
title_sort j/ψ photoproduction in ultra-peripheral pb-pb and p-pb collisions with the alice detector
topic Nuclear Physics - Experiment
url https://dx.doi.org/10.1016/j.nuclphysbps.2015.10.002
http://cds.cern.ch/record/2276598
work_keys_str_mv AT adamjaroslav jpsphotoproductioninultraperipheralpbpbandppbcollisionswiththealicedetector