Light-Quark Dipole Operators at LHC

Abstract

We study the effect of operators generating dipole couplings of the light quarks to electroweak gauge bosons on several observables at LHC. We start by demonstrating that the determination of the gauge boson self-couplings from electroweak diboson production at LHC is robust under the inclusion of those quark dipole operators even when let them totally unconstrained in the analysis. Conversely, we determine the bounds that the diboson data imposes on the light-quark dipole couplings and show that they represent a significant improvement over the limits arising from Z and W electroweak precision measurements. We also explore the sensitivity of the Drell-Yan cross section determination at LHC Run 1, and the results on resonance searches in high invariant-mass lepton pair production at Run 2 to further constrain the electroweak dipole couplings of the light quarks.

arXiv comment13 pages, 5 figures

References in corpus (36)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• PYTHIA 6.4 Physics and Manual
• PYTHIA 6.2 Physics and Manual
• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• DELPHES 3, A modular framework for fast simulation of a generic collider experiment
• FeynRules 2.0 - A complete toolbox for tree-level phenomenology
• Dimension-Six Terms in the Standard Model Lagrangian
• Precision Electroweak Measurements on the Z Resonance
• FeynRules - Feynman rules made easy
• Search for new high-mass phenomena in the dilepton final state using 36 fb${}^{-1}$ of proton-proton collision data at $\sqrt{s}$ = 13 TeV with the ATLAS detector
• Reduced Effective Lagrangians
• A Monte Carlo global analysis of the Standard Model Effective Field Theory: the top quark sector
• Higgs windows to new physics through d = 6 operators: Constraints and one-loop anomalous dimensions
• Robust Determination of the Higgs Couplings: Power to the Data
• Constraining top quark effective theory in the LHC Run II era
• Search for high-mass resonances in dilepton final states in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Search for heavy resonances decaying into $WW$ in the $e\nu \mu \nu$ final state in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Electroweak Sector Under Scrutiny: A Combined Analysis of LHC and Electroweak Precision Data
• Measurements of differential and double-differential Drell-Yan cross sections in proton-proton collisions at 8 TeV
• Measurement of the W+ W- cross section in pp collisions at sqrt(s) = 8 TeV and limits on anomalous gauge couplings
• Measurements of $W^{\pm }Z$ production cross sections in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector and limits on anomalous gauge boson self-couplings
• Measurement of total and differential $W^{+}{W}^{-}$ production cross sections in proton-proton collisions at $\sqrt{s}=$ 8 TeV with the ATLAS detector and limits on anomalous triple-gauge-boson couplings
• Measurement of the double-differential high-mass Drell-Yan cross section in pp collisions at $\sqrt{s}$ = 8 TeV with the ATLAS detector
• An NLO QCD effective field theory analysis of $W_{}^{+}{W}_{}^{-}$ production at the LHC including fermionic operators
• Unitarity Constraints on Dimension-Six Operators
• Unitarity Constraints on Dimension-six Operators II: Including Fermionic Operators
• Probing nonstandard bosonic interactions via W-boson pair production at lepton colliders
• Time to Go Beyond Triple-Gauge-Boson-Coupling Interpretation of $W$ Pair Production
• Equations of Motion for Effective Lagrangians and Penguins in Rare B-Decays
• NLO QCD corrections to SM-EFT dilepton and electroweak Higgs boson production, matched to parton shower in POWHEG
• NLO Effects in EFT Fits to $W^{+}{W}^{-}$ Production at the LHC
• Measurement of the WZ production cross section in pp collisions at sqrt{s} = 7 and 8 TeV and search for anomalous triple gauge couplings at sqrt{s} = 8 TeV
• Constraints on Fermion Magnetic and Electric Moments from LEP-I
• Bounds on Radii and Magnetic Dipole Moments of Quarks and Leptons from LEP, SLC and HERA
• Effect of Fermionic Operators on the Gauge Legacy of the LHC Run I

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• A tale of $Z$+jet: SMEFT effects and the Lam-Tung relation
• Nucleon Energy Correlators as a Probe of Light-Quark Dipole Operators at the Electron-Ion Collider
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• Impact of fermionic operators on the Higgs width measurement