Quarkonia Photoproduction at Nucleus Colliders
arXiv:0711.1123 · doi:10.1016/j.nuclphysbps.2008.09.155
Abstract
Exclusive photoproduction of heavy quarkonia in high-energy ultraperipheral ion-ion interactions (gamma A --> V A, where V = J/Psi,Upsilon and the nucleus A remains intact) offers a useful means to constrain the small-x nuclear gluon density. We discuss preliminary results on J/Psi photoproduction in Au-Au collisions at RHIC energies, as well as full simulation-reconstruction studies of photo-produced Upsilon's in Pb-Pb interactions at the LHC.
4 pages, invited talk PHOTON'07 (Paris), Proceeds. to appear in Nucl. Phys. B