Gluon multiplicity in coherent diffraction of onium on a heavy nucleus

Details Gluon multiplicity in coherent diffraction of onium on a heavy nucleus Gluon multiplicity in coherent diffraction of onium on a heavy nucleus

2008-02-20

arxiv.org/abs/0802.2954v2

Phys.Rev.D77:114012,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

21 pages, 5 figures

Scientific paper

10.1103/PhysRevD.77.114012

We derive the cross section for the diffractive gluon production in high energy onium-nucleus collisions that includes the low-x evolution effects in the rapidity interval between the onium and the produced gluon and in the rapidity interval between the gluon and the target nucleus. We analyze our result in two limiting cases: when the onium size is much smaller than the saturation scale and when its size is much larger than the saturation scale. In the later case the gluon multiplicity is very small in the quasi-classical case and increases when the low-x evolution effects in onium become significant. We discuss the implications of our result for the RHIC, LHC and EIC phenomenology.

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