Vector boson pair production at the LHC

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

doi:10.1007/jhep07(2011)018

Cited by 744 publications

(629 citation statements)

References 51 publications

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“…Cross sections are calculated for the dominant diboson and top-quark processes as follows: the inclusive WW cross section is calculated to NLO in α S with MCFM [51]; nonresonant gluon fusion is calculated and modeled to leading order (LO) in α S with GG2VV, including both WW and ZZ production and their interference; tt production is normalized to the calculation at next-to-next-to-leading order (NNLO) in α S with resummation of higher-order terms to the next-to-next-to-leading logarithms (NNLL), evaluated with TOP++2.0 [52]; and single-top processes are normalized to NNLL following the calculations from Refs. [53][54][55] for the s-channel, t-channel, and Wt processes, respectively.…”

Section: Monte Carlo Samplesmentioning

confidence: 99%

Observation and measurement of Higgs boson decays toWW*with the ATLAS detector

Aad¹,

Albrand²,

Brown³

et al. 2015

Phys. Rev. D

201

225

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We report the observation of Higgs boson decays to WW Ã based on an excess over background of 6.1 standard deviations in the dilepton final state, where the Standard Model expectation is 5.8 standard deviations. Evidence for the vector-boson fusion (VBF) production process is obtained with a significance of 3.2 standard deviations. The results are obtained from a data sample corresponding to an integrated luminosity of 25 fb −1 from ffiffi ffi s p ¼ 7 and 8 TeV pp collisions recorded by the ATLAS detector at the LHC. For a Higgs boson mass of 125.36 GeV, the ratio of the measured value to the expected value of the total production cross section times branching fraction is 1.09 þ0.

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Section: Monte Carlo Samplesmentioning

confidence: 99%

Observation and measurement of Higgs boson decays toWW*with the ATLAS detector

Aad¹,

Albrand²,

Brown³

et al. 2015

Phys. Rev. D

201

225

View full text Add to dashboard Cite

show abstract

“…We reconstruct jets using the anti-k T algorithm from FastJet [53][54][55] with R anti−k T = 0.4, which gives us a very moderate geometric separation of two jets. When dealing with photons in a QCD environment some familiar subtleties have to be considered [56][57][58][59][60][61]: a photon can arise from non-perturbative fragmentation. Those photons are not useful in our case since our focus is obviously not on QED corrections to multi-jet production rates.…”

Section: Jhep02(2012)030mentioning

confidence: 99%

Establishing jet scaling patterns with a photon

Englert

Plehn

Schichtel

et al. 2012

J. High Energ. Phys.

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Staircase and Poisson scaling are two typical patterns we observe for the exclusive number of jets at high energy hadron colliders. We examine these scaling properties for photon plus jets production at the LHC and find that this channel is well suited to study these features. We illustrate and discuss when to expect each of the two patterns, how to induce a transition through kinematic cuts, and how photons are related to heavy gauge bosons. Measurements of photon+jets production is therefore providing valuable information on exclusive jet scaling, which is going to help to eventually understand the theoretical origin of exclusive jet scaling properties in more detail.

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“…For the same rapidity range, the POWHEG+PYTHIA pp simulation predicts 94.0 ± 4.7 nb after scaling with the number of nucleons in the Pb nucleus (A = 208), which agrees with the measured value. The left hand-side of Figure 2 shows the differential cross section of Z boson production as a function of rapidity in the center-of-mass frame compared to predictions from MCFM generator [17]. The MCFM predictions are calculated with MSTW2008NLO [18] free proton PDF set with and without the nuclear modification from EPS09 [19] or DSSZ [20] nPDF sets and scaled by A.…”

Section: Resultsmentioning

confidence: 99%

Z and W boson production in pPb collisions with CMS

Zsigmond

2014

Nuclear Physics A

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The electroweak boson production is an important benchmark measurement in ultra-relativistic heavyion collisions which can provide constraints on the nuclear parton distribution functions. In this paper the first results from the proton-lead collision data taken in early 2013 are presented. The Z boson production cross section is measured in the muon decay channel in bins of transverse momentum and rapidity together with the forward-backward ratio. The W production is studied in the muon and electron decay channels and the differential cross sections, lepton-charge and forward-backward asymmetries are computed as a function of the lepton pseudorapidity. All results are compared with theory predictions with and without nuclear modification of the parton distribution functions showing hints of nuclear effects. Presented at QM2014 Quark Matter 2014Nuclear Physics A 00 (2014) AbstractThe electroweak boson production is an important benchmark measurement in ultra-relativistic heavy-ion collisions which can provide constraints on the nuclear parton distribution functions. In this paper the first results from the proton-lead collision data taken in early 2013 are presented. The Z boson production cross section is measured in the muon decay channel in bins of transverse momentum and rapidity together with the forward-backward ratio. The W production is studied in the muon and electron decay channels and the differential cross sections, lepton-charge and forward-backward asymmetries are computed as a function of the lepton pseudorapidity. All results are compared with theory predictions with and without nuclear modification of the parton distribution functions showing hints of nuclear effects.

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Vector boson pair production at the LHC

Cited by 744 publications

References 51 publications

Observation and measurement of Higgs boson decays toWW*with the ATLAS detector

Observation and measurement of Higgs boson decays toWW*with the ATLAS detector

Establishing jet scaling patterns with a photon

Z and W boson production in pPb collisions with CMS

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