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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 $-0.028<\alpha_5<0.033$.
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http://hal.in2p3.fr/in2p3-01375652
Contributor : Claudine Bombar <>
Submitted on : Monday, October 3, 2016 - 1:29:30 PM
Last modification on : Tuesday, December 1, 2020 - 2:32:13 PM

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M. Aaboud, N. Berger, M. Delmastro, L. Di Ciaccio, S. Elles, et al.. 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. Physical Review D, American Physical Society, 2017, 95, pp.032001. ⟨10.1103/PhysRevD.95.032001⟩. ⟨in2p3-01375652⟩

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