Early LHC measurements to check predictions for central exclusive production

Abstract

We show how the early data runs of the LHC can provide valuable checks of the different components of the formalism used to predict the cross sections of central exclusive processes. The `soft' rapidity gap survival factor can be studied in electroweak processes, such as W+gaps events, where the bare amplitude is well known. The generalized gluon distribution, in the appropriate kinematic region, can be probed by exclusive Upsilon production. The perturbative QCD effects, especially the Sudakov-like factor, can be probed by exclusive two- and three-jet production. We discuss the possible role of enhanced absorptive corrections which would violate the soft-hard factorization implied in the usual formalism, and suggest ways that the LHC may explore their presence.

28 pages, 12 figures; text clarified, new figure added, version to be published in Eur. Phys. J. C

References in corpus (9)

• Update of Parton Distributions at NNLO
• Studying the MSSM Higgs sector by forward proton tagging at the LHC
• Soft diffraction at the LHC: a partonic interpretation
• Leading neutron spectra
• Exclusive J/psi and Upsilon hadroproduction and the QCD odderon
• Diffractive parton distributions from H1 data
• On the role of hard rescattering in exclusive diffractive Higgs production
• The extraction of the bare triple-Pomeron vertex; a crucial ingredient for diffraction
• Central jet production as a probe of the perturbative formalism for exclusive diffraction

Cited by in corpus (16)

• Anomalous WW $\gamma$ coupling in photon-induced processes using forward detectors at the LHC
• Exclusive photoproduction at the Tevatron and LHC within the dipole picture
• Standard candle central exclusive processes at the Tevatron and LHC
• Soft processes at the LHC, I: Multi-component model
• Possibility of Determining $\tau$ Lepton Electromagnetic Moments in $\gamma \gamma \to {\tau }^{+}{\tau }^{-}$ Process at the CERN-LHC
• Central exclusive production within the Durham model: a review
• Anomalous WWgamma couplings in gamma-proton collision at the LHC
• Diffractive dissociation re-visited for predictions at the LHC
• The phenomenology of central exclusive production at hadron colliders
• Diffractive upsilon production at the LHC
• Extra dimensions in photon-induced two lepton final states at the CERN-LHC
• Anomalous Wtb couplings in gamma-proton collision at the LHC
• Review of Central Exclusive Production of the Higgs Boson Beyond the Standard Model
• Radiative QCD backgrounds to exclusive H -> bb(bar) production: radiation from the screening gluon
• Diffractive di-jet production at the LHC with a Reggeon contribution
• Inclusive diffractive ${\eta }_{\mathrm{c}}$ production in pp, pA and AA modes at the LHC