Four photon production at the LHC: an application of 2->4 analytic unitarity

Abstract

We present Next-to-Leading Order (NLO) predictions for $\gamma \gamma \gamma \gamma$ final states, including the effects of photon fragmentation. Our results are calculated fully analytically using the techniques of $D$-dimensional unitarity, and we discuss some refinements to existing methods, focusing particularly on the role of three-mass triangle coefficients. Using these techniques we are able to produce a numerically stable Monto Carlo code that runs fully in double precision. We investigate the $4\gamma$ signal at colliders, both for Run II of the LHC and at future machines. Our results are implemented in MCFM.

arXiv comment12 pages, 5 figures, 1 table

References in corpus (62)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• MadGraph 5 : Going Beyond
• New parton distributions for collider physics
• A General Algorithm for Calculating Jet Cross Sections in NLO QCD
• One-Loop n-Point Gauge Theory Amplitudes, Unitarity and Collinear Limits
• Fusing Gauge Theory Tree Amplitudes Into Loop Amplitudes
• An update on vector boson pair production at hadron colliders
• QCD matrix elements + parton showers: The NLO case
• Generalized Unitarity and One-Loop Amplitudes in N=4 Super-Yang-Mills
• Vector boson pair production at the LHC
• Merging meets matching in MC@NLO
• One-Loop Amplitudes for e^+ e^- to Four Partons
• An Automated Implementation of On-Shell Methods for One-Loop Amplitudes
• ZZ production at hadron colliders in NNLO QCD
• Isolated photons in perturbative QCD
• $W^{+}{W}^{-}$ production at hadron colliders in NNLO QCD
• Direct extraction of one-loop integral coefficients
• Cross section of isolated prompt photons in hadron-hadron collisions
• Higgs boson production in association with a jet at next-to-next-to-leading order in perturbative QCD
• D-dimensional unitarity cut method
• Diphoton production at hadron colliders: a fully-differential QCD calculation at NNLO
• Precise QCD predictions for the production of Higgs+jet final states
• A full Next to Leading Order study of direct photon pair production in hadronic collisions
• One-Loop Corrections to Two-Quark Three-Gluon Amplitudes
• Masses, fermions and generalized D-dimensional unitarity
• Two-Loop Amplitudes for Gluon Fusion into Two Photons
• NLO Higgs boson production plus one and two jets using the POWHEG BOX, MadGraph4 and MCFM
• The Cut-Constructible Part of QCD Amplitudes
• Unitarity cuts and reduction to master integrals in d dimensions for one-loop amplitudes
• Direct Extraction Of One Loop Rational Terms
• Isolating a light Higgs boson from the di-photon background at the LHC
• Measurement of isolated-photon pair production in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector
• Electroweak radiative corrections to b --> s gamma
• S@M, a Mathematica Implementation of the Spinor-Helicity Formalism
• $Z\gamma$ production at hadron colliders in NNLO QCD
• A complete $\mathcal{O}(\alpha {\alpha }_s)$ calculation of the Photon + 1 Jet rate in $e^{+}{e}^{-}$ annihilation
• On Triple-Cut of Scattering Amplitudes
• Measurements of fiducial and differential cross sections for Higgs boson production in the diphoton decay channel at $\sqrt{s}=8$ TeV with ATLAS
• Measurement of the inclusive isolated prompt photon cross section in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector using 4.6 fb-1
• Double-Cut of Scattering Amplitudes and Stokes' Theorem
• Analytic one-loop amplitudes for a Higgs boson plus four partons
• One-loop Higgs plus four gluon amplitudes: Full analytic results
• Non-planar master integrals for the production of two off-shell vector bosons in collisions of massless partons
• Next-to-leading order QCD corrections to di-photon production in association with up to three jets at the Large Hadron Collider
• Measurement of direct photon pair production cross sections in ppbar collisions at sqrt(s)=1.96 TeV
• Analytic results for the one-loop NMHV Hqqgg amplitude
• Measurement of the triple-differential cross section for photon + jets production in proton-proton collisions at sqrt(s) = 7 TeV
• Precise QCD predictions for the production of a photon pair in association with two jets
• QCD radiative corrections to prompt diphoton production in association with a jet at hadron colliders
• Zγγproduction with leptonic decays and triple photon production at NLO QCD
• The Isolated Photon Cross Section in the Central and Forward Rapidity Regions in p-pbar Collisions at sqrt(s) = 1.8 TeV
• Photon isolation effects at NLO in gamma gamma + jet final states in hadronic collisions
• Measurement of the Production Cross Section for Pairs of Isolated Photons in pp collisions at sqrt(s) = 7 TeV
• Measurement of the cross section for prompt isolated diphoton production using the full CDF Run II data sample
• Analytic Structure of Three-Mass Triangle Coefficients
• Triphoton production at hadron colliders
• Measurement of the Cross Section for Prompt Isolated Diphoton Production in p\bar p Collisions at \sqrt{s} = 1.96 TeV
• Next-to-Leading Order Gamma Gamma + 2-Jet Production at the LHC
• Multiparticle Higgs and Vector Boson Amplitudes at Threshold
• Three photon production to NLO+PS accuracy at the LHC

Cited by in corpus (2)

• Accelerating LHC phenomenology with analytic one-loop amplitudes: A C++ interface to MCFM
• Next-to-leading order predictions for WW+jet production