One-loop gg->bb(bar) effects in the main irreducible background to exclusive H->bb(bar) production at the LHC

Abstract

We calculate the amplitude of gg->bb(bar) production for the colour singlet, J_z=0 di-gluon state at O(α_S^2) order. We consider the cancellation, and a realistic cutoff, of the infrared divergent terms. We show that the one-loop radiative QCD contributions effectively reduce the Born level result for the central exclusive bb(bar) cross section at the LHC. This process is essentially the only irreducible QCD background to the exclusive H->bb(bar) signal.

arXiv comment24 pages, 5 figures

References in corpus (27)

• Multi-Parton Amplitudes in Gauge Theories
• Unintegrated parton distributions
• Prospects for New Physics observations in diffractive processes at the LHC and Tevatron
• Soft diffraction and the elastic slope at Tevatron and LHC energies: a multi-Pomeron approach
• Can the Higgs be seen in rapidity gap events at the Tevatron or the LHC?
• One-loop helicity amplitudes for all 2 -> 2 processes in QCD and N=1 supersymmetric Yang-Mills theory
• Two-loop QCD corrections to massless quark-gluon scattering
• Double-diffractive processes in high-resolution missing-mass experiments at the Tevatron
• Ways to detect a light Higgs boson at the LHC
• Two-loop QED and QCD corrections to massless fermion-boson scattering
• Extending the study of the Higgs sector at the LHC by proton tagging
• Reinstating the 'no-lose' theorem for NMSSM Higgs discovery at the LHC
• Studying the MSSM Higgs sector by forward proton tagging at the LHC
• Unintegrated generalised parton distributions
• Soft diffraction at the LHC: a partonic interpretation
• Three-jet final states and measuring the $\gamma \gamma$ width of the Higgs at a photon linear collider
• Detecting Higgs bosons in the bb decay channel using forward proton tagging at the LHC
• Higgs studies in polarized gamma-gamma collisions
• Higgs Boson Production at the Compton Collider
• All-Orders Resummation of Leading Logarithmic Contributions to Heavy Quark Production in Polarized γγCollisions
• Insight into Double-Pomeron-Exchange Higgs production and backgrounds
• On radiative QCD backgrounds to exclusive H -> b bbar production at the LHC and a photon collider
• Renormalization Group Improved Heavy Quark Production in Polarized γγCollisions
• Heavy Quark Production at a $\gamma \gamma$ Collider: the Effect of Large Logarithmic Perturbative Corrections
• New Physics with Tagged Forward Protons at the LHC
• The FP420 R&D Project at the LHC
• Diffraction at the Tevatron and the LHC

Cited by in corpus (13)

• The FP420 R&D Project: Higgs and New Physics with forward protons at the LHC
• Central exclusive production within the Durham model: a review
• The phenomenology of central exclusive production at hadron colliders
• Review of Central Exclusive Production of the Higgs Boson Beyond the Standard Model
• BSM Higgs Physics in the Exclusive Forward Proton Mode at the LHC
• Searching for the triplet Higgs sector via central exclusive production at the LHC
• Exclusive MSSM Higgs production at the LHC after Run I
• Central exclusive quark-antiquark dijet and Standard Model Higgs boson production in proton-(anti)proton collisions
• Subdominant terms in the production of $c\bar{c}$ pairs in proton-proton collisions
• Exclusive double-diffractive production of open charm in proton-proton and proton-antiproton collisions
• Radiative QCD backgrounds to exclusive H -> bb(bar) production: radiation from the screening gluon
• BSM Higgs Studies at the LHC in the Forward Proton Mode
• New mechanisms of charm production