Predictions for diphoton production at the LHC through NNLO in QCD

Campbell, John M.; Ellis, R. Keith; Li, Ye; Williams, Ciaran

doi:10.1007/jhep07(2016)148

Cited by 132 publications

(157 citation statements)

References 86 publications

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“…Both ATLAS (Aad et al, 2012b(Aad et al, , 2013c and CMS (Chatrchyan et al, 2012a(Chatrchyan et al, , 2014a have studied diphoton production at 7 TeV in data samples with integrated luminosities of up to 5 fb −1 . The measured total cross sections are clearly most compatible with the theoretical predictions at NNLO, and partial N 3 LO results including the NLO corrections to the gluon-gluon channel box diagram lead to a further 7% increase of the total cross section prediction (Campbell et al, 2016).…”

Section: Methodssupporting

confidence: 75%

“…For diboson production, the state of the art QCD calculation is NNLO for W + W − Grazzini et al, 2016a), W ± γ (Denner et al, 2015;Grazzini et al, 2015a), Grazzini et al, 2015a) and γγ (Campbell et al, 2016). There has been recent rapid progress on this front using q T subtraction techniques and in the near future public codes, such as MATRIX (Wiesemann et al, 2016), should be available to automate event generation.…”

Section: Diboson Productionmentioning

confidence: 99%

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Multiboson interactions at the LHC

2017

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In addition, data on electroweak triple gauge boson production and 2-to-2 vector boson scattering (VBS) yield limits on anomalous quartic gauge boson couplings (aQGCs). The LHC hosts two general purpose experiments, ATLAS and CMS, which both have reported limits on aTGCs and aQGCs which are herein summarized. The interpretation of these limits in terms of an effective field theory (EFT) is reviewed, and recommendations are made for testing other types of new physics using multi-gauge boson production. CONTENTS

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Section: Methodssupporting

confidence: 75%

Section: Diboson Productionmentioning

confidence: 99%

Multiboson interactions at the LHC

2017

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“…[33]. Therein the results have been validated using the same procedure as we will adopt later; we do not repeat that analysis here.…”

Section: Associated Higgs Production: W ± H and Z H Processesmentioning

confidence: 99%

“…pp → H and pp → Z were also calculated using this method [4]. Additional processes of phenomenological interest, pp → V H [22] and pp → γ γ [33] have been calculated using the same approach.…”

Section: Introductionmentioning

confidence: 99%

Color-singlet production at NNLO in MCFM

et al. 2016

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We present the implementation of several colorsinglet final-state processes at Next-to-Next-to Leading Order (NNLO) accuracy in QCD to the publicly available parton-level Monte Carlo program MCFM. Specifically we discuss the processesDecays of the unstable bosons are fully included, resulting in a flexible fully differential Monte Carlo code. The NNLO corrections have been calculated using the non-local N -jettiness subtraction approach. Special attention is given to the numerical aspects of running MCFM for these processes at this order. We pay particular attention to the systematic uncertainties due to the power corrections induced by the N -jettiness regularization scheme and the evaluation time needed to run the hybrid openMP/MPI version of MCFM at NNLO on multiprocessor systems.

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“…Due to the lack of a new electron-positron collider, few improvements have been made on photon FFs over the last decades [24,25]. NLO calculations for Zγ+jet and Zγγ [29] have recently become available in MCFM, followed by predictions at next-to-next-to-leading order (NNLO) for diphoton [26,27] and Zγ [28] production. The disadvantages of inclusive calculations lie in the limited multiplicity of and information on the produced final state and the consequently restricted number of kinematic observables.…”

Section: Jhep03(2018)081mentioning

confidence: 99%

Prompt photon production and photon-jet correlations at the LHC

Klasen

Klein-Bösing

Poppenborg

2018

J. High Energ. Phys.

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Next-to-leading order predictions matched to parton showers are compared with recent ATLAS data on isolated photon production and CMS data on associated photon and jet production in pp and pPb collisions at different centre-of-mass energies of the LHC. We find good agreement and, as expected, considerably reduced scale uncertainties compared to previous theoretical calculations. Predictions are made for the ratio of inclusive photons over decay photons R γ , an important quantity to evaluate the significance of additional photon sources, e.g. thermal radiation from a Quark-Gluon-Plasma, and for distributions in the parton momentum fraction in lead ions x obs Pb , that could be determined by ALICE, ATLAS, CMS and LHCb in ongoing analyses of photon+jet production in pPb collisions at √ s N N = 5.02 TeV. These data should have an important impact on the determination of nuclear effects such as shadowing at low x.

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Predictions for diphoton production at the LHC through NNLO in QCD

Cited by 132 publications

References 86 publications

Multiboson interactions at the LHC

Multiboson interactions at the LHC

Color-singlet production at NNLO in MCFM

Prompt photon production and photon-jet correlations at the LHC

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