Speaker
Sigurd Nese
(University of Oslo (NO))
Description
Inelastic photoproduction of charm has been used previously to constrain the proton gluon distribution at low-x, using e-p collisions. Ultra-peripheral heavy-ion collisions provide an opportunity to use the same mechanism to study the less known nuclear gluon distribution. In these collisions, a photon emitted from one nucleus interacts with a gluon in the target nucleus, producing a pair of charm anti-charm quarks. These fragment to open- or hidden-charm hadrons, which are reconstructed. The cross sections and transverse momentum distributions for D mesons and J/psi will be presented, and the results compared to model calculations.
Author
Sigurd Nese
(University of Oslo (NO))
