Hadronic final states in deep-inelastic scattering with Sherpa

Abstract

We extend the multi-purpose Monte-Carlo event generator Sherpa to include processes in deeply inelastic lepton-nucleon scattering. Hadronic final states in this kinematical setting are characterised by the presence of multiple kinematical scales, which were up to now accounted for only by specific resummations in individual kinematical regions. Using an extension of the recently introduced method for merging truncated parton showers with higher-order tree-level matrix elements, it is possible to obtain predictions which are reliable in all kinematical limits. Different hadronic final states, defined by jets or individual hadrons, in deep-inelastic scattering are analysed and the corresponding results are compared to HERA data. The various sources of theoretical uncertainties of the approach are discussed and quantified. The extension to deeply inelastic processes provides the opportunity to validate the merging of matrix elements and parton showers in multi-scale kinematics inaccessible in other collider environments. It also allows to use HERA data on hadronic final states in the tuning of hadronisation models.

32 pages, 22 figures

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Cited by in corpus (29)

• Event Generation with Sherpa 2.2
• Tuning Monte Carlo Generators: The Perugia Tunes
• A critical appraisal of NLO+PS matching methods
• General-purpose event generators for LHC physics
• NLO matrix elements and truncated showers
• The midpoint between dipole and parton showers
• Automating the POWHEG method in Sherpa
• Uncertainties in MEPS@NLO calculations of h+jets
• NNLO QCD corrections to jet production in deep inelastic scattering
• Measurements of $Z\gamma$ and $Z\gamma \gamma$ production in $pp$ collisions at $\sqrt{s}=$ 8 TeV with the ATLAS detector
• Some Dipole Shower Studies
• NLO QCD+EW predictions for $2\ell 2\nu$ diboson signatures at the LHC
• Precise QCD predictions for the production of dijet final states in deep inelastic scattering
• Zero and one jet combined NLO analysis of the top quark forward-backward asymmetry
• Automation of NLO QCD and EW corrections with Sherpa and Recola
• QCD Coherence and the Top Quark Asymmetry
• A practical guide to event generation for prompt photon production
• Measuring collinear W emissions inside jets
• PanScales parton showers for hadron collisions: formulation and fixed-order studies
• W Plus Multiple Jets at the LHC with High Energy Jets
• Hadronically decaying color-adjoint scalars at the LHC
• Hadronic Final States in DIS at NNLO QCD with Parton Showers
• A POWHEG generator for deep inelastic scattering
• Dijet production in diffractive deep-inelastic scattering in next-to-next-to-leading order QCD
• Neutral and Charged Current Semi-Inclusive Deep-Inelastic Scattering at NNLO QCD
• Semileptonic decays of the Higgs boson at the Tevatron
• Multi-Jet Production in Deep Inelastic Scattering with Pythia
• The Forward Physics Facility at the High-Luminosity LHC
• Event generation at MEPS@NLO accuracy in neutral and charged current DIS at the EIC