Electroweak Radiative Corrections in Precision LHC Measurements of $W^{\pm }/Z^0$+jets

Abstract

We calculate the fiducial and differential $W^{\pm }/Z^0+jet(s)$ production cross-sections in the presence of electroweak (EW) corrections through virtual loop contributions to the matrix elements (MEs) of the processes and real partonic cascade emissions. The calculations are carried out for proton-proton collisions at $\sqrt{s}=13$ TeV, using Herwig 7 general-purpose Monte-Carlo event generator with leading-order or next-to-leading-order MEs that are interfaced with different parton-shower configurations. The results are compared with precision experimental measurements from ATLAS collaboration and with similar predictions within the $k_t$-factorisation framework, providing a test for the validity of the newly-implemented QCD$\oplus$QED$\oplus$EW parton shower in Herwig 7. It is shown that the inclusion of EW radiations in the parton shower simulations improves Herwig 7's predictions in describing the experimental data. Additionally, the inclusion of parton shower-induced real EW emissions can take precedence over the incorporation of virtual EW corrections for the simulation of EW-sensitive events.

arXiv comment21 pages, 9 figures and 1 table

References in corpus (38)

• Herwig++ Physics and Manual
• New parton distribution functions from a global analysis of quantum chromodynamics
• Parton distributions in the LHC era: MMHT 2014 PDFs
• Herwig 7.0 / Herwig++ 3.0 Release Note
• Rivet user manual
• OpenLoops 2
• Unintegrated parton distributions
• GoSam-2.0: a tool for automated one-loop calculations within the Standard Model and beyond
• The CCFM Monte Carlo generator CASCADE 2.2.0
• Electroweak Radiative Corrections for Collider Physics
• Dipole Showers and Automated NLO Matching in Herwig++
• NLO prescription for unintegrated parton distributions
• Soft-gluon resolution scale in QCD evolution equations
• TMDlib and TMDplotter: library and plotting tools for transverse-momentum-dependent parton distributions
• An automated subtraction of NLO EW infrared divergences
• Production of Z-bosons in the parton branching method
• Multi-jet merged top-pair production including electroweak corrections
• TMDlib2 and TMDplotter: a platform for 3D hadron structure studies
• Electroweak Sudakov Corrections to New Physics Searches at the CERN LHC
• Dynamical resolution scale in transverse momentum distributions at the LHC
• CASCADE3 A Monte Carlo event generator based on TMDs
• Parton Shower Uncertainties with Herwig 7: Benchmarks at Leading Order
• Measuring collinear W emissions inside jets
• Merging NLO Multi-jet Calculations with Improved Unitarization
• New Insights into the Perturbative Structure of Electroweak Sudakov Logarithms
• Predictions for $\mathrm{Z}$-boson production in association with a $\mathrm{b}$-jet at $\mathcal{O}({\alpha }_s^3)$
• On the use of the KMR unintegrated parton distribution functions
• Production of electroweak gauge bosons in off-shell gluon-gluon fusion
• Pathologies of the KMR prescriptions for unintegrated PDFs: Which prescription should be preferred?
• The $NLO$ production of the $W^{\pm }$ and $Z^0$ vector bosons via hadron collisions in the frameworks of $KMR$ and $MRW$ unintegrated parton distribution functions
• Back-to-back azimuthal correlations in Z+jet events at high transverse momentum in the TMD parton branching method at next-to-leading order
• LHC production of forward-center and forward-forward di-jets in the $k_t$-factorization $unintegrated$ parton distribution frameworks
• $KMR$ $k_t$-factorization procedure for the description of the $LHCb$ forward hadron-hadron $Z^0$ production at $\sqrt{s}=13TeV$
• Multi-jet Merging with TMD Parton Branching
• A phenomenological study on the production of Higgs bosons in the cSMCS model at the LHC
• Signature of the Maximally Symmetric 2HDM via $W^{\pm }/Z$-Quadruplet Productions at the LHC
• $k_t$-factorization vs collinear factorization in $W^{+}{W}^{-}$ pair production at the LHC
• Future prospects for parton showers

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