Brazilian Journal of Physics
On-line version ISSN 1678-4448
GONCALVES, Victor P. and MACHADO, Magno V. T.. Small-x physics at coherent pA/AA interactions at LHC. Braz. J. Phys. [online]. 2007, vol.37, n.1a, pp. 106-109. ISSN 1678-4448. http://dx.doi.org/10.1590/S0103-97332007000100031.
We report on our recent investigations in photonuclear production of heavy quarks and vector mesons in ultraperipheral collisions at nucleus-nucleus and proton-nucleus reactions. They are initiated by quasi-real photons coming from one of the nuclei or hadron in interactions taking place at large impact parameter. We focus on the role played by the high energy theoretical/phenomenological approaches in photon-nuclei scattering, namely the strength of parton saturation phenomenon and high energy nuclear shadowing. In particular, our theoretical predictions are compared with the recent experimental measurements on coherent r (STAR) and J/Y (PHENIX) photoproduction at RHIC and estimates for LHC are given.
Keywords : Heavy Ion Collisions; Quantum Chromodynamics; Parton Saturation Effects.