Speaker
Jesus Guillermo Contreras Nuno
(Czech Technical University (CZ))
Description
The strong electromagnetic fields generated by ultra-relativistic heavy ions offer the
possibility to study photoproduction processes at the LHC. In so called ultra-peripheral
collisions (UPC), when the impact parameter of the incoming hadrons is larger than the
sum of their radii, hadronic processes are strongly suppressed and only electromagnetic
interactions remain.
ALICE has measured the exclusive photoproduction of vector mesons -- including ρ0, J/ψ and ψ(2s) -- in γ-p and γ-Pb using p-Pb and Pb-Pb collisions respectively. These processes provide information on the QCD structure of the targets at higher photon-target center-of-mass energies than ever before, and contribute to our understanding of saturation and nuclear gluon shadowing.
The talk will cover the results from LHC Run1 data, as well as discuss the current status and prospects for analyses with LHC Run2 data.
| Collaboration | ALICE |
|---|
