Multi-jet merged top-pair production including electroweak corrections

Abstract

We present theoretical predictions for the production of top-quark pairs in association with jets at the LHC including electroweak (EW) corrections. First, we present and compare differential predictions at the fixed-order level for $t\bar{t}$ and $t\bar{t}+$jet production at the LHC considering the dominant NLO EW corrections of order $\mathcal{O}({\alpha }_S^2\alpha )$ and $\mathcal{O}({\alpha }_S^3\alpha )$ respectively together with all additional subleading Born and one-loop contributions. The NLO EW corrections are enhanced at large energies and in particular alter the shape of the top transverse momentum distribution, whose reliable modelling is crucial for many searches for new physics at the energy frontier. Based on the fixed-order results we motivate an approximation of the EW corrections valid at the percent level, that allows us to readily incorporate the EW corrections in the MEPS@NLO framework of Sherpa combined with OpenLoops. Subsequently, we present multi-jet merged parton-level predictions for inclusive top-pair production incorporating NLO QCD+EW corrections to $t\bar{t}$ and $t\bar{t}+$jet. Finally, we compare at the particle-level against a recent 8 TeV measurement of the top transverse momentum distribution performed by ATLAS in the lepton+jet channel. We find very good agreement between the Monte Carlo prediction and the data when the EW corrections are included.

arXiv comment10 pages, 5 figures

References in corpus (73)

• FastJet user manual
• Big-Bang Nucleosynthesis
• LHAPDF6: parton density access in the LHC precision era
• The total top quark pair production cross-section at hadron colliders through O(alpha_S^4)
• Scattering Amplitudes with Open Loops
• A Positive-Weight Next-to-Leading-Order Monte Carlo for Heavy Flavour Hadroproduction
• QCD Matrix Elements + Parton Showers
• QCD matrix elements + parton showers: The NLO case
• QCD matrix elements and truncated showers
• Collier: a fortran-based Complex One-Loop LIbrary in Extended Regularizations
• Top-pair production at hadron colliders with next-to-next-to-leading logarithmic soft-gluon resummation
• The Dipole Formalism for Next-to-Leading Order QCD Calculations with Massive Partons
• Rivet user manual
• A critical appraisal of NLO+PS matching methods
• Matching NLO QCD and parton showers in heavy flavour production
• CutTools: a program implementing the OPP reduction method to compute one-loop amplitudes
• Hadronic top-quark pair production with NNLL threshold resummation
• AMEGIC++ 1.0, A Matrix Element Generator In C++
• Correcting the Colour-Dipole Cascade Model with Fixed Order Matrix Elements
• NLO matrix elements and truncated showers
• A General Approach To Photon Radiation Off Fermions
• Matrix Elements and Parton Showers in Hadronic Interactions
• High-precision differential predictions for top-quark pairs at the LHC
• Assault on the NLO Wishlist: pp -> tt bb
• Distributions and correlations for top quark pair production and decay at the Tevatron and LHC.
• One-loop leading logarithms in electroweak radiative corrections, I. Results
• NLO QCD corrections to t tbar + jet production at hadron colliders
• Automating dipole subtraction for QCD NLO calculations
• A modified cluster-hadronization model
• Complete off-shell effects in top quark pair hadroproduction with leptonic decay at next-to-leading order
• The Photon Content of the Proton
• NLO QCD corrections to pp -> t anti-t b anti-b + X at the LHC
• NLO QCD corrections to WWbb production at hadron colliders
• Top-pair production at the LHC through NNLO QCD and NLO EW
• Dominant QCD Backgrounds in Higgs Boson Analyses at the LHC: A Study of pp -> t anti-t + 2 jets at Next-To-Leading Order
• NLO QCD corrections to top anti-top bottom anti-bottom production at the LHC: 2. full hadronic results
• Measurement of differential top-quark pair production cross sections in pp collisions at sqrt(s) = 7 TeV
• Top-pair production and decay at NLO matched with parton showers
• The electroweak contribution to the top quark forward-backward asymmetry at the Tevatron
• NLO QCD matrix elements + parton showers in e+e- -> hadrons
• NLO QCD corrections to top quark pair production and decay at hadron colliders
• Hadronic top-quark pair-production with one jet and parton showering
• NLO QCD corrections to off-shell top-antitop production with leptonic decays at hadron colliders
• Soft Photon Radiation in Particle Decays in SHERPA
• NLO QCD corrections to top quark pair production in association with one hard jet at hadron colliders
• An NLO+PS generator for $t\bar{t}$ and $Wt$ production and decay including non-resonant and interference effects
• Electroweak effects in top-quark pair production at Hadron Colliders
• One-loop leading logarithms in electroweak radiative corrections: II. Factorization of collinear singularities
• Polarized QED splittings of massive fermions and dipole subtraction for non-collinear-safe observables
• Weak interaction corrections to hadronic top quark pair production
• NLO matching for ttbb production with massive b-quarks
• Hadronic top-quark pair production in association with two jets at Next-to-Leading Order QCD
• Weak Interactions in Top-Quark Pair Production at Hadron Colliders: An Update
• Top quark pair production in association with a jet: QCD corrections and jet radiation in top quark decays
• NLO electroweak corrections to off-shell top-antitop production with leptonic decays at the LHC
• Uncertainties in NLO + parton shower matched simulations of inclusive jet and dijet production
• Next-to-leading order QCD predictions for top-quark pair production with up to two jets merged with a parton shower
• Top Quark Pair Production in Association with a Jet with NLO QCD Off-Shell Effects at the Large Hadron Collider
• NLO QCD+EW predictions for $2\ell 2\nu$ diboson signatures at the LHC
• The top induced backgrounds to Higgs production in the WW -> llvv decay channel at NLO in QCD
• Top quark pair production in association with a jet with NLO parton showering
• Zero and one jet combined NLO analysis of the top quark forward-backward asymmetry
• The impact of the photon PDF and electroweak corrections on $t\bar{t}$ distributions
• Automation of NLO QCD and EW corrections with Sherpa and Recola
• A unified NLO description of top-pair and associated Wt production
• HERA and the LHC - A workshop on the implications of HERA for LHC physics: Proceedings - Part B
• Matching the Nagy-Soper parton shower at next-to-leading order
• Off-shell production of top-antitop pairs in the lepton+jets channel at NLO QCD
• Next-to-leading order QCD predictions for top-quark pair production with up to three jets
• Hadroproduction of t anti-t pair with a b anti-b pair with PowHel
• Electroweak corrections to diphoton plus jets
• Two-loop electroweak next-to-leading logarithms for processes involving heavy quarks
• NLO QCD+EW corrections to diphoton production in association with a vector boson

Cited by in corpus (45)

• Event Generation with Sherpa 2.2
• OpenLoops 2
• The automation of next-to-leading order electroweak calculations
• Electroweak Radiative Corrections for Collider Physics
• Top-quark pair production at the LHC: Fully differential QCD predictions at NNLO
• Event Generators for High-Energy Physics Experiments
• Observation of four-top-quark production in the multilepton final state with the ATLAS detector
• Higgs Physics: It ain't over till it's over
• PineAPPL: combining EW and QCD corrections for fast evaluation of LHC processes
• Les Houches 2021: Physics at TeV Colliders: Report on the Standard Model Precision Wishlist
• Top quark pair production near threshold: single/double distributions and mass determination
• Two-loop master integrals for a planar topology contributing to $pp\to t\bar{t}j$
• Next-to-leading order electroweak corrections to off-shell WWW production at the LHC
• Fixed-order and merged parton-shower predictions for WW and WWj production at the LHC including NLO QCD and EW corrections
• NLO and off-shell effects in top quark mass determinations
• Projected transverse momentum resummation in top-antitop pair production at LHC
• Higher-order EW corrections in ZZ and ZZj production at the LHC
• Full NLO corrections to 3-jet production and R32 at the LHC
• Phenomenology of $t\bar{t}j+X$ production at the LHC
• Numerical evaluation of two-loop QCD helicity amplitudes for $gg\to t\bar{t}g$ at leading colour
• Precise predictions for single-top production: the impact of EW corrections and QCD shower on the t-channel signature
• Top-quark pair production at complete-NLO accuracy with NNLO+NNLL${}^{\prime }$ corrections in QCD
• A study of additional jet activity in top quark pair production and decay at the LHC
• Top-quark pair production as a probe of light top-philic scalars and anomalous Higgs interactions
• Four lepton production and the accuracy of QED FSR
• Search for flavour-changing neutral-current couplings between the top quark and the Higgs boson in multi-lepton final states in 13 TeV $pp$ collisions with the ATLAS detector
• Search for $t\bar{t}H/A\to t\bar{t}t\bar{t}$ production in the multilepton final state in proton-proton collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Measurement of the total and differential cross-sections of $t\bar{t}W$ production in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Tri-boson and WH production in the ${\mathrm{W}}^{+}{\mathrm{W}}^{+}\mathrm{jj}$ channel: predictions at full NLO accuracy and beyond
• On electroweak corrections to neutral current Drell-Yan with the POWHEG BOX
• Logarithmic EW corrections at one-loop
• Les Houches 2023 -- Physics at TeV Colliders: Report on the Standard Model Precision Wishlist
• Double virtual QCD corrections to $t\bar{t}+$jet production at the LHC
• Electroweak corrections and EFT operators in $W^{+}{W}^{-}$ production at the LHC
• Analytic NNLO transverse-momentum-dependent soft function for heavy quark pair hadroproduction at threshold
• Measurement of $t\bar{t}$ production in association with additional $b$-jets in the $e\mu$ final state in proton-proton collisions at $\sqrt{s}$=13 TeV with the ATLAS detector
• The $q_{\mathrm{T}}$ and $\Delta {\varphi }_{t\bar{t}}$ spectra in top-antitop hadroproduction at NNLL+NNLO: the interplay of soft-collinear resummation and Coulomb singularities
• Electroweak Radiative Corrections in Precision LHC Measurements of $W^{\pm }/Z^0$+jets
• NLO corrections to triple vector-boson production in final states with three charged leptons and two jets
• Electroweak $t\bar{t}$ hadroproduction in the presence of heavy $Z^{\prime }$ and $W^{\prime }$ bosons at NLO QCD in POWHEG
• Modelling and tuning in top quark physics
• One-loop amplitudes for $t\bar{t}j$ and $t\bar{t}\gamma$ productions at the LHC through $\mathcal{O}({\epsilon }^2)$
• Theory status of hadronic top-quark pair production
• Precise predictions for electroweak $t\bar{t}$ production at the LHC in models with flavour non-diagonal $Z^{\prime }$ boson couplings and $W^{\prime }$ bosons
• $t\bar{t}W$ Production: a very complex process