Energy dependence of exclusive J/Psi photoproduction in p-Pb interactions at ALICE
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F18%3A00328415" target="_blank" >RIV/68407700:21340/18:00328415 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Energy dependence of exclusive J/Psi photoproduction in p-Pb interactions at ALICE
Original language description
The electromagnetic field of a fast moving lead ion at the LHC is an intense source of quasi- real photons. This makes it possible to study J/ψ exclusive photoproduction off protons in p–Pb collisions, which is sensitive to the gluon content of the target. Measuring the rapidity of the produced vector meson one can compute the centre-of-mass energy Wγp of the photon–proton scattering. Using LHC Run 1 data, ALICE has measured the cross section for exclusive J/ψ photoproduction in a wide range of scattering angles. In this contribution, we present, for the first time, preliminary measurements of the cross section using the central-barrel detectors of ALICE, as well as cross sections for a novel topology where one of the muons from the decay of the J/ψ is detected with the forward-muon spectrometer and the other muon with the central-barrel detectors. These measurements allow us to study the evolution of the cross section with Wγp in the range from 20 GeV to 700 GeV. The measurements are compared to the newest theoretical models.
Czech name
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Czech description
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Classification
Type
O - Miscellaneous
CEP classification
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OECD FORD branch
10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)
Result continuities
Project
<a href="/en/project/GA18-07880S" target="_blank" >GA18-07880S: Searching for signatures of saturation: energy dependence of J/Psi photoproduction with ALICE proton - lead data</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů