Elastic and inelastic diffraction at the LHC

Deep inelastic scattering and “elastic” diffraction

We examine the total cross section of virtual photons on protons, σγ∗p(W , Q), at low x ∼= Q/W 2 ≪ 1 and its connection with “elastic” diffractive production γ T,Lp → X T,L p in the two-gluon exchange dynamics for the virtual forward Compton scattering amplitude. Solely based on the generic structure of twogluon exchange, we establish that the cross section is described by the (imaginary part o...

Multigap Diffraction at LHC

The large rapidity interval available at the Large Hadron Collider (LHC) offers an arena in which the QCD aspects of diffraction may be explored in an environment free of gap survival complications using events with multiple rapidity gaps. Presented at DIS-2005, XIIIth International Workshop on Deep Inelastic Scallering, April 27 May 1 2005, Madison, WI, U.S.A.

Qcd and Hard Diffraction at the Lhc

As an introduction to QCD at the LHC I give an overview of QCD at the Tevatron, emphasizing the high Q 2 frontier which will be taken over by the LHC. After describing briefly the LHC detectors I discuss high mass diffraction, in particular central exclusive production of Higgs and vector boson pairs. I introduce the FP420 project to measure the scattered protons 420m downstream of ATLAS and CM...

Elastic and Inelastic Scattering in Electron Diffraction and Imaging Introduction

High mass diffraction at the LHC

We use a Monte Carlo implementation of recently developped models of exclusive diffractive W , top, Higgs and stop productions to assess the sensitivity of the LHC experiments. THEORETICAL FRAMEWORK The proposed model for pp → p+H + p, the Bialas-Landshoff (BL) [1] model, is based on a summation of two-gluon exchange Feynman graphs coupled to Higgs production by the top quark loop. The non-pert...