A sensitivity study of VBS and diboson WW to dimension-6 EFT operators at the LHC

Abstract

We present a parton-level study of electro-weak production of vector-boson pairs at the Large Hadron Collider, establishing the sensitivity to a set of dimension-six operators in the Standard Model Effective Field Theory (SMEFT). Different final states are statistically combined, and we discuss how the orthogonality and interdependence of different analyses must be considered to obtain the most stringent constraints. The main novelties of our study are the inclusion of SMEFT effects in non-resonant diagrams and in irreducible QCD backgrounds, and an exhaustive template analysis of optimal observables for each operator and process considered. We also assess for the first time the sensitivity of vector-boson-scattering searches in semileptonic final states.

Final version after editor's revision. Improved text descriptions and plots styling. Added subparagraph in chapter 5.1 discussing the impact of SMEFT corrections in propagators which was previously ignored

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Cited by in corpus (12)

• Impact of Dimension-8 SMEFT operators on Diboson Productions
• Measurement and interpretation of same-sign $W$ boson pair production in association with two jets in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Unitarity Bounds on Effective Field Theories at the LHC
• Sensitivity to New Physics in final states with multiple gauge and Higgs bosons
• Observation of electroweak W${}^{+}$W${}^{-}$ pair production in association with two jets in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Measurements of electroweak $W^{\pm }Z$ boson pair production in association with two jets in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• QCD effects in electroweak $WZjj$ production at current and future hadron colliders
• Anomalous gauge couplings vis-$\grave{a}$-vis $(g-2{)}_{\mu }$ and flavor observables
• A sensitivity study of triboson production processes to dimension-6 EFT operators at the LHC
• Study of same-sign W boson scattering and anomalous couplings in events with one tau lepton from pp collisions at $\sqrt{s}$ = 13 TeV
• Gluon-gluon fusion contribution to the productions of three gauge bosons at the LHC
• Weak bosons as partons below 10 TeV partonic center-of-momentum