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Title of Journal: J High Energ Phys

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Abbravation: Journal of High Energy Physics

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Springer Berlin Heidelberg

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DOI

10.1016/0020-7683(94)90176-7

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1029-8479

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Strong tW scattering at the LHC

Authors: Jeff Asaf Dror Marco Farina Ennio Salvioni Javi Serra
Publish Date: 2016/01/13
Volume: 2016, Issue: 1, Pages: 71-
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Abstract

Deviations of the top electroweak couplings from their Standard Model values imply that certain amplitudes for the scattering of third generation fermions and longitudinally polarized vector bosons or Higgses diverge quadratically with momenta This highenergy growth is a genuine signal of models where the top quark is strongly coupled to the sector responsible for electroweak symmetry breaking We propose to profit from the high energies accessible at the LHC to enhance the sensitivity to nonstandard topZ couplings which are currently very weakly constrained To demonstrate the effectiveness of the approach we perform a detailed analysis of tW → tW scattering which can be probed at the LHC via ppto toverlinetWj By recasting a CMS analysis at 8 TeV we derive the strongest direct bounds to date on the Ztt couplings We also design a dedicated search at 13 TeV that exploits the distinctive features of the toverlinetWj signal Finally we present other scattering processes in the same class that could provide further tests of the topHiggs sectorThis article is published under an open access license Please check the Copyright Information section for details of this license and what reuse is permitted If your intended use exceeds what is permitted by the license or if you are unable to locate the licence and reuse information please contact the Rights and Permissions team

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