Gluon-induced W-boson pair production at the LHC

By Thomas Binoth, M. Ciccolini, N. Kauer, Michael Krämer. 2006

237 citations recorded by the source corpus.

Pair production of W bosons constitutes an important background to Higgs boson and new physics searches at the Large Hadron Collider LHC. We have calculated the loop-induced gluon-fusion process gg → W ∗ W ∗ → leptons, including intermediate light and heavy quarks and allowing for arbitrary invariant masses of the W bosons. While formally of next-to-next-to-leading order, the gg → W ∗ W ∗ → leptons process is enhanced by the large gluon flux at the LHC and by experimental Higgs search cuts, and increases the next-to-leading order W W background estimate for Higgs searches by about 30%. We have extended our previous calculation to include the contribution from the intermediate top- bottom massive quark loop and the Higgs signal process. We provide updated results for cross sections and differential distributions and study the interference between the different gluon scattering contributions. We describe important analytical and numerical aspects of our calculation and present the public GG2WW event generator.

Subfields: Artificial Intelligence, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/554b764f475b720a8de8d8b2fb83c865779cf9ca

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Citations in the corpus

Measurement of Higgs boson production and properties in the WW decay channel with leptonic final states (2013, background): “1 generator [64], and the tt and tW processes are generated with powheg.”
Inadequacy of zero-width approximation for a light Higgs boson signal (2012, background): “[60–65] and for related processes in Refs.”
Search for direct top-squark pair production in final states with two leptons in pp collisions at root s=8 TeV with the ATLAS detector (2014, methodology): “The cross-sections calculated at NLO are used for the diboson [69], tt̄W and tt̄Z [70] samples.”
Evidence for the Higgs-boson Yukawa coupling to tau leptons with the ATLAS detector (2015, unknown): “For WW production, the loop-induced gg →WW process is also generated, using the gg2WW [79] program.”
Handbook of LHC Higgs Cross Sections: 3. Higgs Properties (2013, background): “GG2VV is a parton-level integrator and event generator for all gg (→ H) → VV → 4 leptons processes (V = W,Z/γ∗) [85, 556, 598, 599].”
Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC (2012, unknown): “tqb AcerMC [61]+PYTHIA qq̄→WW MC@NLO+HERWIG gg→WW gg2WW [62]+HERWIG qq̄→ ZZ POWHEG [63]+PYTHIA gg→ ZZ gg2ZZ [64]+HERWIG”
Measurements of Higgs boson production and couplings in diboson final states with the ATLAS detector at the LHC (2013, unknown): “gg → WW gg2WW [42,43] + HERWIG qq̄ → ZZ∗ POWHEG [44] + PYTHIA”
Search for a Higgs boson in the mass range from 145 to 1000 GeV decaying to a pair of W or Z bosons (2015, methodology): “The first level of the CMS trigger system, composed of custom hardware processors, uses information from the calorimeters and the muon detectors to select the most”
The Higgs-boson lineshape☆ (2011, methodology): “[48,49,50]) has not been included and, strictly speaking and for reasons of gauge invariance, one should consider only the residue of the Higgs-resonant amplitude at the complex pole, as described in Eq.”
Vector boson pair production at the LHC (2011, methodology): “[22] where the effect of massive quarks circulating in the loop is included.”