Deep-Elastic pp Scattering at LHC from Low-x Gluons

Details Deep-Elastic pp Scattering at LHC from Low-x Gluons Deep-Elastic pp Scattering at LHC from Low-x Gluons

2008-04-03

arxiv.org/abs/0804.0455v2

Mod.Phys.Lett. A 24 (2009) 485-496

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, including 4 figures

Scientific paper

Deep-elastic pp scattering at c.m. energy 14 TeV at LHC in the momentum transfer range 4 GeV*2 < |t| < 10 GeV*2 is planned to be measured by the TOTEM group. We study this process in a model where the deep-elastic scattering is due to a single hard collision of a valence quark from one proton with a valence quark from the other proton. The hard collision originates from the low-x gluon cloud around one valence quark interacting with that of the other. The low-x gluon cloud can be identified as color glass condensate and has size ~0.3 F. Our prediction is that pp differential cross section in the large |t| region decreases smoothly as momentum transfer increases. This is in contrast to the prediction of pp differential cross section with visible oscillations and smaller cross sections by a large number of other models.

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