$J/\psi$ photoproduction in ultra-peripheral Pb-Pb and p-Pb collisions with the ALICE detector
| Autor: | Jaroslav Adam |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Electromagnetic field
Nuclear and High Energy Physics Particle physics Proton Meson QC1-999 Astrophysics::High Energy Astrophysical Phenomena Nuclear Theory nuclear gluon shadowing 01 natural sciences 7. Clean energy Ion Nuclear physics 0103 physical sciences Rapidity Nuclear Physics - Experiment ultra-peripheral collision 010306 general physics Nuclear Experiment Physics Large Hadron Collider 010308 nuclear & particles physics Detector High Energy Physics::Phenomenology Gluon High Energy Physics::Experiment ALICE (propellant) gluon saturation Particle Physics - Experiment photoproduction |
| Zdroj: | EPJ Web of Conferences, Vol 71, p 00002 (2014) |
| Popis: | 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 s N N = 2.76 TeV at forward and central rapidities. Furthermore, we also present results on the J / ψ photoproduction in p-Pb UPC at s N N = 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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