Measurement of forward direct photon production in p-A at the LHC with ALICE - A probe for nuclear PDFs and saturation
arXiv:1607.01673
Abstract
Probes for the small-x parton densities and predicted effects of gluon saturation are discussed. At very low x and intermediate Q, only results on hadronic observables at the LHC are available, which do not provide unambiguous information. It is shown that the measurement of direct photons at forward rapidity at the LHC is particularly promising to provide a unique signal. We further discuss the possibilities to perform such measurements with a detector upgrade in the ALICE experiment and present the R&D activities ongoing.
5 pages, Proceedings of the XXIV International Workshop on Deep-Inelastic Scattering and Related Subjects