A tale of $Z$+jet: SMEFT effects and the Lam-Tung relation

Abstract

We derive constraints on dimension-six light-quark dipole operators within the Standard Model (SM) effective field theory, based on measurements of $Z$ production at SLC and LEP, as well as $Z$+jet production at the LHC. Our new constraints exclude the parameter space that could potentially explain the observed discrepancy between theoretical predictions and experimental data for the Lam-Tung relation. With these updated limits, we model-independently determine the maximum possible influence that beyond-SM contributions could have on the angular coefficients $A_0$ and $A_2$, which enter the Lam-Tung relation.

arXiv comment25 pages, 7 figures; v2: revised and expanded version of the manuscript as accepted for publication in SciPost

References in corpus (44)

• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• An Introduction to PYTHIA 8.2
• Asymptotic formulae for likelihood-based tests of new physics
• FeynRules 2.0 - A complete toolbox for tree-level phenomenology
• Dimension-Six Terms in the Standard Model Lagrangian
• Generating Feynman Diagrams and Amplitudes with FeynArts 3
• Parton distributions from high-precision collider data
• PDF4LHC recommendations for LHC Run II
• UFO - The Universal FeynRules Output
• Precision Electroweak Measurements on the Z Resonance
• Combined Measurement and QCD Analysis of the Inclusive ep Scattering Cross Sections at HERA
• The Standard Model as an Effective Field Theory
• Precise QCD predictions for the production of a Z boson in association with a hadronic jet
• High-$p_T$ dilepton tails and flavour physics
• Uncertainty induced by QCD coupling in the CTEQ global analysis of parton distributions
• Energy helps accuracy: electroweak precision tests at hadron colliders
• Precise predictions for V+jets dark matter backgrounds
• Electroweak corrections to dilepton + jet production at hadron colliders
• The Standard Model effective field theory at work
• Angular coefficients of Z bosons produced in pp collisions at sqrt(s) = 8 TeV and decaying to mu+mu- as a function of transverse momentum and rapidity
• Measurement of the angular coefficients in $Z$-boson events using electron and muon pairs from data taken at $\sqrt{s}=8$ TeV with the ATLAS detector
• Novel angular dependence in Drell-Yan lepton production via dimension-8 operators
• Angular Distributions of Drell-Yan Lepton Pairs at the Tevatron: Order ${\alpha }_s^2$ Corrections and Monte Carlo Studies
• Charm Physics Confronts High-$p_T$ Lepton Tails
• Catching a New Force by the Tail
• SMEFT and the Drell-Yan Process at High Energy
• NNLO QCD corrections for Drell-Yan $p_T^Z$ and ${\varphi }^{\ast }$ observables at the LHC
• Probing Electroweak Precision Physics via boosted Higgs-strahlung at the LHC
• HighPT: A Tool for high-$p_T$ Drell-Yan Tails Beyond the Standard Model
• Precise predictions for the angular coefficients in Z-boson production at the LHC
• NLO QCD corrections to SM-EFT dilepton and electroweak Higgs boson production, matched to parton shower in POWHEG
• Parton distributions in the SMEFT from high-energy Drell-Yan tails
• Diboson at the LHC vs LEP
• Probing new electroweak states via precision measurements at the LHC and future colliders
• Precision Probes of QCD at High Energies
• FormCalc 9 and Extensions
• High-energy EFT probes with fully differential Drell-Yan measurements
• Exploring the SMEFT at dimension-8 with Drell-Yan transverse momentum measurements
• Measurement of the W-boson mass and width with the ATLAS detector using proton-proton collisions at $\sqrt{s}$ = 7 TeV
• Measurement of the mass dependence of the transverse momentum of lepton pairs in Drell-Yan production in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Light-Quark Dipole Operators at LHC
• LHC tau-pair production constraints on $a_{\tau }$ and $d_{\tau }$
• Shift-Type SMEFT Effects in Dileptons at the LHC
• A precise determination of the strong-coupling constant from the recoil of $Z$ bosons with the ATLAS experiment at $\sqrt{s}=8$ TeV

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