Diffractive processes at the LHC

Details Diffractive processes at the LHC Diffractive processes at the LHC

2008-11-10

arxiv.org/abs/0811.1481v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, 3 figures; Based on a talk by A.D. Martin at Diffraction 2008, La Londe-les-Maures, France, September 2008

Scientific paper

10.1063/1.3122187

We present a model of high energy soft $pp$ interactions that has multi s- and t-channel components, which has been tuned to describe all the available data. The t-channel components allow matching of the soft to the hard (QCD) Pomeron. Absorptive effects are found to be large, and, for example, suppress the prediction of the total $pp$ cross section to about 90 mb at the LHC. We use the model to calculate the survival probability, S^2, of the rapidity gaps in the exclusive process pp \to p+H+p, a process with great advantages for searching for the H \to \bb signal. We consider both eikonal and enhanced rescattering.

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