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arXiv · 1105.3275

The Ridge from the BFKL evolution and beyond

Eugene Levin·Amir H. Rezaeian
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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.

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Eugene Levin, Amir H. Rezaeian. 2011-07-27. The Ridge from the BFKL evolution and beyond. https://doi.org/10.1103/physrevd.84.034031

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