The two-loop helicity amplitudes for gg → V
                            1
                            V
                            2 → 4 leptons

Manteuffel, Andreas von; Tancredi, Lorenzo

doi:10.1007/jhep06(2015)197

Cited by 68 publications

(72 citation statements)

References 60 publications

(88 reference statements)

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“…We also compared the leading order helicity amplitude with the results of previous computations [31][32][33][34], as implemented in the program MCFM [35], and found agreement. Finally, we note that we compared the numerical results for helicity amplitudes reported in table 1 with the results of the independent calculation [36] and found complete agreement.…”

Section: Jhep06(2015)129supporting

confidence: 64%

Two-loop helicity amplitudes for the production of two off-shell electroweak bosons in gluon fusion

Caola

Henn

Melnikov

et al. 2015

J. High Energ. Phys.

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Abstract:We compute the part of the two-loop virtual amplitude for the process gg → V 1 V 2 → (l 1l 1 )(l 2l 2 ), where V 1,2 are arbitrary electroweak gauge bosons, that receives contributions from loops of massless quarks. Invariant masses of electroweak bosons are allowed to be different from each other. Our result provides an important ingredient for improving the description of gluon fusion contribution to the production of four-lepton final states at the LHC.

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Section: Jhep06(2015)129supporting

confidence: 64%

Two-loop helicity amplitudes for the production of two off-shell electroweak bosons in gluon fusion

Caola

Henn

Melnikov

et al. 2015

J. High Energ. Phys.

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“…Two-loop helicity amplitudes for gg → V V became available in refs. [35,36], and have been used to compute the NLO QCD corrections to gg → W + W − [37], including all partonic processes with external gluons, while the ones with external quarks are still unknown to date. Calculations at NLO QCD for W + W − production in association with one [38][39][40][41] and two [42,43] jets are also important ingredients of inclusive W + W − production at NNLO QCD and beyond.…”

Section: Jhep08(2016)140mentioning

confidence: 99%

W + W − production at the LHC: fiducial cross sections and distributions in NNLO QCD

Grazzini

Kallweit

Pozzorini

et al. 2016

J. High Energ. Phys.

128

176

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We consider QCD radiative corrections to W + W − production at the LHC and present the first fully differential predictions for this process at next-to-next-to-leading order (NNLO) in perturbation theory. Our computation consistently includes the leptonic decays of the W bosons, taking into account spin correlations, off-shell effects and nonresonant contributions. Detailed predictions are presented for the different-flavour channel pp → µ + e − ν µνe + X at √ s = 8 and 13 TeV. In particular, we discuss fiducial cross sections and distributions in the presence of standard selection cuts used in experimental W + W − and H → W + W − analyses at the LHC. The inclusive W + W − cross section receives large NNLO corrections, and, due to the presence of a jet veto, typical fiducial cuts have a sizeable influence on the behaviour of the perturbative expansion. The availability of differential NNLO predictions, both for inclusive and fiducial observables, will play an important role in the rich physics programme that is based on precision studies of W + W − signatures at the LHC.

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“…All LO and NLO contributions have been computed [10][11][12][13][14][15][16][17][18][19][20][21][22], with the exception of the two-loop correction to background amplitudes proceeding through a massive loop, which is beyond current calculational techniques. We therefore expand in s/m 2 t for both the real radiation and virtual corrections to the massive background amplitudes [23].…”

Section: Details Of the Calculationmentioning

confidence: 99%

Higgs off-shell effects at NLO

Röntsch¹,

Caola²,

Dowling³

et al. 2017

Proceedings of 38th International Conference on High Energy Physics — PoS(ICHEP2016)

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We describe a recent computation of next-to-leading order (NLO) QCD corrections to the gluonic production of two massive vector bosons, including both prompt gg → VV production and the Higgs-mediated production gg → H * → VV , as well as their interference. Both massless and massive quark loops are considered, with the NLO corrections to the latter being treated in a large mass expansion. We present results in the sizable window between the Higgs and top production thresholds. The NLO corrections are large and similar in size for the signal, background, and interference processes. The NLO corrections are also roughly constant in the invariant mass of the diboson pair, except near the 2m V threshold, where the corrections to the interference change dramatically.

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The two-loop helicity amplitudes for gg → V 1 V 2 → 4 leptons

Cited by 68 publications

References 60 publications

Two-loop helicity amplitudes for the production of two off-shell electroweak bosons in gluon fusion

Two-loop helicity amplitudes for the production of two off-shell electroweak bosons in gluon fusion

W + W − production at the LHC: fiducial cross sections and distributions in NNLO QCD

Higgs off-shell effects at NLO

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