The Ridge from the BFKL evolution and beyond
Abstract
We show that the long-range rapidity correlations between the produced charged-hadron pairs from two BFKL parton showers generate considerable azimuthal angle correlations. These correlations have no 1/N_c suppression. The effect of gluon saturation on these correlations are discussed and we show that it is important. We show that a pronounced ridge-like structure emerges by going from the BFKL to the saturation region. We show that the ridge structure at high-energy proton-proton and nucleus-nucleus collisions has the same origin and its main feature can be understood due to initial-state effects. Although the effects of final-state interactions in the latter case can be non-negligible.
Cite
@article{arxiv.1105.3275,
title = {The Ridge from the BFKL evolution and beyond},
author = {Eugene Levin and Amir H. Rezaeian},
journal= {arXiv preprint arXiv:1105.3275},
year = {2011}
}
Comments
12 pages, 6 figures; v2: version improved. The version to appear in Phys. Rev. D