W+W− production at the LHC: NLO QCD corrections to the loop-induced gluon fusion channel

Grazzini, Massimiliano; Kallweit, Stefan; Wiesemann, Marius; Yook, Jeong Yeon

doi:10.1016/j.physletb.2020.135399

Cited by 29 publications

(46 citation statements)

References 99 publications

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“…The contribution of this gg → V V channel to chargeneutral final states is quite sizeable. It has been computed to one order higher in perturbation theory [30,32,[80][81][82][83][84], which is assumed to be the dominant O(α 3 S ) correction to these processes. In the combination of NNLO QCD and NLO EW corrections presented in this paper, the gg → V V channels are included at O(α 2 S ) as part of the NNLO QCD corrections, i.e.…”

Section: Higher-order Qcd Correctionsmentioning

confidence: 99%

NNLO QCD + NLO EW with Matrix+OpenLoops: precise predictions for vector-boson pair production

Grazzini

Kallweit

Lindert

et al. 2020

J. High Energ. Phys.

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We present the first combination of NNLO QCD and NLO EW corrections for vectorboson pair production at the LHC. We consider all final states with two, three and four charged leptons, including resonant and non-resonant diagrams, spin correlations and off-shell effects. Detailed predictions are discussed for three representative channels corresponding to W + W − , W ± Z and ZZ production. Both QCD and EW corrections are very significant, and the details of their combination can play a crucial role to achieve the level of precision demanded by experimental analyses. In this context we point out nontrivial issues that arise at large transverse momenta, where the EW corrections are strongly enhanced by Sudakov logarithms and the QCD corrections can feature so-called giant K-factors. Our calculations have been carried out in the Matrix+OpenLoops framework and can be extended to the production of an arbitrary colour singlet in hadronic collisions, provided that the required two-loop QCD amplitudes are available. Combined NNLO QCD and NLO EW predictions for the full set of massive diboson processes will be made publicly available in the next release of Matrix and will be instrumental in advancing precision diboson studies and new-physics searches at the LHC and future hadron colliders.

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Section: Higher-order Qcd Correctionsmentioning

confidence: 99%

NNLO QCD + NLO EW with Matrix+OpenLoops: precise predictions for vector-boson pair production

Grazzini

Kallweit

Lindert

et al. 2020

J. High Energ. Phys.

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“…These have been recently combined with EW corrections [17] and with parton-shower corrections [18]. Resummed computations [19] as well as the gluon-gluon loop-induced contribution [20,21] are also available. Very recently, a combination of fixed-order predictions with resummed ones has been presented in ref.…”

Section: Jhep10(2020)159mentioning

confidence: 99%

“…They deliver useful information concerning the correlations between the two channels. We also state for reference the cross sections of the loop-induced contributions [20,21,24], which can be treated completely independently and simply be added to our results.…”

Section: Jhep10(2020)159mentioning

confidence: 99%

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Fixed-order and merged parton-shower predictions for WW and WWj production at the LHC including NLO QCD and EW corrections

Bräuer

Denner

Pellen

et al. 2020

J. High Energ. Phys.

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First, we present a combined analysis of pp $$ \to {\mu}^{+}{v}_{\mu }{\mathrm{e}}^{-}{\overline{v}}_{\mathrm{e}} $$ → μ + v μ e − v ¯ e and pp $$ \to {\mu}^{+}{v}_{\mu }{\mathrm{e}}^{-}{\overline{v}}_{\mathrm{e}}\mathrm{j} $$ → μ + v μ e − v ¯ e j at next-to-leading order, including both QCD and electroweak corrections. Second, we provide all-order predictions for pp $$ \to {\mu}^{+}{v}_{\mu }{\mathrm{e}}^{-}{\overline{v}}_{\mathrm{e}}+ $$ → μ + v μ e − v ¯ e + jets using merged parton-shower simulations that also include approximate EW effects. A fully inclusive sample for WW production is compared to the fixed-order computations for exclusive zero- and one-jet selections. The various higher-order effects are studied in detail at the level of cross sections and differential distributions for realistic experimental set-ups. Our study confirms that merged predictions are significantly more stable than the fixed-order ones in particular regarding ratios between the two processes.

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“…[25][26][27], and the relative NLO corrections (O(α 3 S )) were obtained more recently, in Refs. [28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

NLO QCD+NLO EW corrections to diboson production matched to parton shower

2020

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We present the matching of NLO QCD and NLO EW corrections to parton showers for vector-boson pair production at the LHC. We consider leptonic final states, including resonant and non-resonant diagrams, spin correlations and off-shell effects. Our results are obtained interfacing the Recola2-Collier one-loop provider with the framework. We discuss our implementation, we validate it at fixed order, and we show our final results matched to parton shower. A by-product of our work is also a general interface between Recola2-Collier and . This is the first time that EW and QCD corrections to diboson production are consistently matched to parton showers.

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W+W− production at the LHC: NLO QCD corrections to the loop-induced gluon fusion channel

Cited by 29 publications

References 99 publications

NNLO QCD + NLO EW with Matrix+OpenLoops: precise predictions for vector-boson pair production

NNLO QCD + NLO EW with Matrix+OpenLoops: precise predictions for vector-boson pair production

Fixed-order and merged parton-shower predictions for WW and WWj production at the LHC including NLO QCD and EW corrections

NLO QCD+NLO EW corrections to diboson production matched to parton shower

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