An event generator for same-sign W-boson scattering at the LHC including electroweak corrections

Chiesa, Mauro; Denner, Ansgar; Lang, Jean-Nicolas; Pellen, Mathieu

doi:10.1140/epjc/s10052-019-7290-6

Cited by 38 publications

(34 citation statements)

References 67 publications

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“…It has recently been found (and further confirmed in Refs. [43,64]) that large EW corrections are an intrinsic feature of VBS at the LHC [49]. It originates from the quantum numbers of the particles involved in the process as well as the large scale induced by the massive t-channel exchange [65].…”

Section: Resultsmentioning

confidence: 99%

Precise predictions for double-Higgs production via vector-boson fusion

et al. 2020

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Theoretical predictions with next-to-next-to-leading order (NNLO) QCD accuracy combined with the next-to-leading order (NLO) electroweak (EW) corrections are presented for differential observables of the double-Higgs production process via vector-boson fusion. While the QCD corrections were previously known, the EW ones are computed here for the first time. The numerical results are obtained for a realistic experimental set-up at the LHC and are presented in the form of fiducial cross sections and differential distributions. Within this setup we find that the VBF approximation employed in the NNLO QCD correction is accurate at the sub-percent level. We find that the NLO EW corrections within the fiducial volume are $$-\,6.1\%$$ - 6.1 % , making them of almost the same order as the NLO QCD corrections. In some kinematic regions they can grow as large as $$-\,30\%$$ - 30 % making them the dominant radiative corrections. When the EW corrections are combined with the NNLO QCD corrections we find a total correction of $$-\,14.8\%$$ - 14.8 % . The results presented here thus comprise the state-of-the-art theoretical predicition for the double-Higgs production via vector-boson fusion, which will be of value to the high-luminosity programme at the LHC.

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Section: Resultsmentioning

confidence: 99%

Precise predictions for double-Higgs production via vector-boson fusion

et al. 2020

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“…Effects of the NLO electroweak corrections [53] and of the interference between electroweak and strong W AE W AE jj production [9] are assigned as an uncertainty in the m jj shape of the W AE W AE jj signal, amounting to 6% and 4%, respectively. This approach is used because no event generator implemented the complete NLO calculation until recently [54] and because the interference contribution is defined only at the leading order [8]. The overlap of the photon radiation in the SHERPA parton shower model with the NLO EW corrections is found to be negligible.…”

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confidence: 99%

Observation of Electroweak Production of a Same-Sign W Boson Pair in Association with Two Jets in pp Collisions at s=13
Aaboud¹,
Aad²,
Abbott³
et al. 2019
Phys. Rev. Lett.
62
1
49
0
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This Letter presents the observation and measurement of electroweak production of a same-sign W boson pair in association with two jets using 36.1 fb −1 of proton-proton collision data recorded at a centerof-mass energy of ffiffi ffi s p ¼ 13 TeV by the ATLAS detector at the Large Hadron Collider. The analysis is performed in the detector fiducial phase-space region, defined by the presence of two same-sign leptons, electron or muon, and at least two jets with a large invariant mass and rapidity difference. A total of 122 candidate events are observed for a background expectation of 69 AE 7 events, corresponding to an observed signal significance of 6.5 standard deviations. The measured fiducial signal cross section is σ fid ¼ 2.89 þ0.51 −0.48 ðstatÞ þ0.29 −0.28 ðsystÞ fb.

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“…3.3, where shower effects are taken into account, if a jet includes a bb pair it is considered as a b-jet 5. In the case of processes involving a single perturbative order at LO and without QCD interactions, such as Drell-Yan or Higgs-Strahlung, this technology is available[82][83][84][85].…”

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confidence: 99%

Precise predictions for single-top production: the impact of EW corrections and QCD shower on the t-channel signature

Frederix

Pagani

Tsinikos

2019

J. High Energ. Phys.

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In this work we calculate and provide precise predictions for the signature that is typically exploited at the LHC for the measurement of t-channel single-top production: 1 lepton, 1 light jet, 1 b-jet, / E T and no additional jets or leptons. We apply the cuts that define the fiducial region and we take into account all the contributions to this signature; not only those from resonant t-channel single-top production. On the one hand, we calculate the complete-NLO corrections, i.e., all NLO effects of QCD and EW origin. On the other hand, we study in detail the impact of a QCD parton shower for the fiducial region we consider. We provide predictions in different approximations at the inclusive level and for several differential distributions. Our study demonstrates the relevance of both EW corrections and shower effects for obtaining precise and reliable theoretical predictions for the single-top-production fiducial region.

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An event generator for same-sign W-boson scattering at the LHC including electroweak corrections

Cited by 38 publications

References 67 publications

Precise predictions for double-Higgs production via vector-boson fusion

Precise predictions for double-Higgs production via vector-boson fusion

Observation of Electroweak Production of a Same-Sign W Boson Pair in Association with Two Jets in pp Collisions at s=13
Aaboud¹,
Aad²,
Abbott³
et al. 2019
Phys. Rev. Lett.
62
1
49
0
View full text Add to dashboard Cite

Precise predictions for single-top production: the impact of EW corrections and QCD shower on the t-channel signature

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An event generator for same-sign W-boson scattering at the LHC including electroweak corrections

Cited by 38 publications

References 67 publications

Precise predictions for double-Higgs production via vector-boson fusion

Precise predictions for double-Higgs production via vector-boson fusion

Observation of Electroweak Production of a Same-Sign W Boson Pair in Association with Two Jets in pp Collisions at s=13 Aaboud1, Aad2, Abbott3 et al. 2019Phys. Rev. Lett.621490View full textAdd to dashboardCite

Precise predictions for single-top production: the impact of EW corrections and QCD shower on the t-channel signature

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Product

Resources

About

Observation of Electroweak Production of a Same-Sign W Boson Pair in Association with Two Jets in pp Collisions at s=13
Aaboud¹,
Aad²,
Abbott³
et al. 2019
Phys. Rev. Lett.
62
1
49
0
View full text Add to dashboard Cite