Search for anomalous electroweak production of $WW/WZ$ in association with a high-mass dijet system in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector

Abstract

A search is presented for anomalous quartic gauge boson couplings in vector-boson scattering. The data for the analysis correspond to $20.2$ fb${}^{-1}$ of $\sqrt{s}=8$ TeV $pp$ collisions, and were collected in 2012 by the ATLAS experiment at the Large Hadron Collider. The search looks for the production of $WW$ or $WZ$ boson pairs accompanied by a high-mass dijet system, with one $W$ decaying leptonically, and a $W$ or $Z$ decaying hadronically. The hadronically decaying $W/Z$ is reconstructed as either two small-radius jets or one large-radius jet using jet substructure techniques. Constraints on the anomalous quartic gauge boson coupling parameters ${\alpha }_4$ and ${\alpha }_5$ are set by fitting the transverse mass of the diboson system, and the resulting 95% confidence intervals are $-0.024<{\alpha }_4<0.030$ and $-0.028<{\alpha }_5<0.033$.

38 pages in total, author list starting page 22, 5 figures, 2 tables, published in Phys. Rev. D. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2015-09/

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• Measurements of the pp $\to$ WZ inclusive and differential production cross section and constraints on charged anomalous triple gauge couplings at $\sqrt{s}=$ 13 TeV
• Study of $WW\gamma$ and $WZ\gamma$ production in $pp$ collisions at $\sqrt{s}=8$ TeV and search for anomalous quartic gauge couplings with the ATLAS experiment
• Different polarization definitions in same-sign $WW$ scattering at the LHC
• Vector Boson Scattering Processes: Status and Prospects
• One-loop renormalization of VBS with the electroweak chiral Lagrangian in covariant gauges
• Measurement of the inclusive and differential WZ production cross sections, polarization angles, and triple gauge couplings in pp collisions at $\sqrt{s}=$ 13 TeV
• Search for triboson $W^{\pm }{W}^{\pm }{W}^{\mp }$ production in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector
• Introducing tools to test Higgs interactions via $WW$ scattering I: one-loop calculations and renormalization in the HEFT
• Electroweak Skyrmions in the HEFT
• Anomalous production of massive gauge boson pairs at muon colliders
• Expected sensitivity on the anomalous quartic neutral gauge couplings in $\gamma \gamma$ collisions at the CLIC
• Sensitivity to longitudinal vector boson scattering in semileptonic final states at the HL-LHC
• Constraints on Anomalous Quartic Gauge Couplings via Electroweak Production of $\gamma \gamma jj$ at Future Proton-Proton Colliders