Scaling laws hold logarithmically for model size in autoregressive jet generation, with next-token loss correlating to physical metrics via sliced Wasserstein distance, but show weaker scaling for dataset size and compute due to rapid saturation.
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Event generation with SHERPA 1.1
Mixed citation behavior. Most common role is method (67%).
19
Pith papers citing it
Method
67% of classified citations
abstract
In this paper the current release of the Monte Carlo event generator Sherpa, version 1.1, is presented. Sherpa is a general-purpose tool for the simulation of particle collisions at high-energy colliders. It contains a very flexible tree-level matrix-element generator for the calculation of hard scattering processes within the Standard Model and various new physics models. The emission of additional QCD partons off the initial and final states is described through a parton-shower model. To consistently combine multi-parton matrix elements with the QCD parton cascades the approach of Catani, Krauss, Kuhn and Webber is employed. A simple model of multiple interactions is used to account for underlying events in hadron--hadron collisions. The fragmentation of partons into primary hadrons is described using a phenomenological cluster-hadronisation model. A comprehensive library for simulating tau-lepton and hadron decays is provided. Where available form-factor models and matrix elements are used, allowing for the inclusion of spin correlations; effects of virtual and real QED corrections are included using the approach of Yennie, Frautschi and Suura.
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method 6
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representative citing papers
Proposes a numerical cross-validation procedure for SMEFT Monte Carlo implementations by comparing linearized EFT amplitudes and their SM interferences at fixed points.
First automated MC@NLO matching of NLO QCD+EW to an interleaved QCD+QED parton shower with resonance-aware dipole subtraction, validated for Drell-Yan lepton-pair production.
A reweighting method is introduced to efficiently study and tune MPI and CR parameter variations in Sherpa using relative weights, demonstrated with LHC and Tevatron data.
NNLL resummation shows that scale variations drastically underestimate higher-order uncertainties in NNLO inclusive jet cross sections for typical jet radii, rendering such estimates unreliable.
A resonance- and width-aware parton shower with NLO matching is developed for e+e- to W+W- bbbar, extending beyond standard Breit-Wigner approximations, with a public SHERPA-based simulator.
Continuous normalizing flows improve unweighting efficiency in Monte Carlo event generation for high-jet-multiplicity collider processes by factors up to 184, with wall-time gains of about ten when combined with coupling-layer flows.
The GN2 b-jet tagger is calibrated in 56 fb⁻¹ of 13.6 TeV pp data using dileptonic tt̄ events, yielding data-to-simulation scale factors of 0.9–1.3 with ~1% uncertainty in the best bins.
Proposes jet correlation observables to discriminate QCD instanton processes from perturbative hard scattering in LHC pp collisions, with energy constraints derived from instanton size and separation calculations in 2+1 flavor QCD.
Updated constraints from the full Run 2 dataset show no evidence for anomalous Higgs couplings in gluon fusion, vector boson fusion, and associated production modes decaying to two photons.
New CMS PYTHIA 8 tunes using NLO or NNLO PDFs describe minimum-bias, underlying-event, and jet data in top-quark pair events at a level comparable to LO-based tunes.
Systematic comparison of three event generators shows they describe photoproduction data adequately, with PYTHIA and SHERPA performing best, and identifies photon PDF refits plus RIVET measurements as prerequisites for EIC precision.
Recent developments in IR-improved amplitude-based resummation are presented for precision observables in high energy collider physics.
Jarvis-HEP introduces a YAML-based Python framework for composing workflows and performing parameter scans in high-energy physics.
Light-ion collisions at the LHC provide evidence of quark-gluon plasma formation in small systems, bridging proton-proton and heavy-ion regimes.
Electroweak corrections reach about -16% for like-sign WW scattering and -7% for triple-W production at the LHC, even for integrated cross sections, and the paper discusses approximations to full off-shell calculations.
The document reports the first year of activity of the VBSCan COST Action network on vector-boson scattering phenomenology and experiments from a 2018 workshop.
citing papers explorer
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Neural Scaling Laws for Jet Generation
Scaling laws hold logarithmically for model size in autoregressive jet generation, with next-token loss correlating to physical metrics via sliced Wasserstein distance, but show weaker scaling for dataset size and compute due to rapid saturation.
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Proposal for the validation of Monte Carlo implementations of the standard model effective field theory
Proposes a numerical cross-validation procedure for SMEFT Monte Carlo implementations by comparing linearized EFT amplitudes and their SM interferences at fixed points.
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A resonance-aware MC@NLO QCD+EW-matched calculation of lepton-pair production
First automated MC@NLO matching of NLO QCD+EW to an interleaved QCD+QED parton shower with resonance-aware dipole subtraction, validated for Drell-Yan lepton-pair production.
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Reweighting Underlying Event and Colour Reconnection parameter variations in Sherpa
A reweighting method is introduced to efficiently study and tune MPI and CR parameter variations in Sherpa using relative weights, demonstrated with LHC and Tevatron data.
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Les Houches study on inclusive jet production at NNLO+NNLL
NNLL resummation shows that scale variations drastically underestimate higher-order uncertainties in NNLO inclusive jet cross sections for typical jet radii, rendering such estimates unreliable.
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Resonance- and Width-aware Parton Shower Evolution and NLO Matching
A resonance- and width-aware parton shower with NLO matching is developed for e+e- to W+W- bbbar, extending beyond standard Breit-Wigner approximations, with a public SHERPA-based simulator.
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Monte Carlo Event Generation with Continuous Normalizing Flows
Continuous normalizing flows improve unweighting efficiency in Monte Carlo event generation for high-jet-multiplicity collider processes by factors up to 184, with wall-time gains of about ten when combined with coupling-layer flows.
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Measurement of the $b$-jet identification efficiency in dileptonic $t\bar{t}$ events using proton-proton collision data at $\sqrt{s}=13.6$ TeV collected with the ATLAS detector
The GN2 b-jet tagger is calibrated in 56 fb⁻¹ of 13.6 TeV pp data using dileptonic tt̄ events, yielding data-to-simulation scale factors of 0.9–1.3 with ~1% uncertainty in the best bins.
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Probing QCD instantons using jet correlation observables in proton-proton collisions at the LHC
Proposes jet correlation observables to discriminate QCD instanton processes from perturbative hard scattering in LHC pp collisions, with energy constraints derived from instanton size and separation calculations in 2+1 flavor QCD.
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Constraints on anomalous Higgs boson couplings to vector bosons and fermions using the $\gamma\gamma$ final state in proton-proton collisions at $\sqrt{s}$ = 13 TeV
Updated constraints from the full Run 2 dataset show no evidence for anomalous Higgs couplings in gluon fusion, vector boson fusion, and associated production modes decaying to two photons.
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Quantum Chromodynamics Monte Carlo Tuning Studies in CMS
New CMS PYTHIA 8 tunes using NLO or NNLO PDFs describe minimum-bias, underlying-event, and jet data in top-quark pair events at a level comparable to LO-based tunes.
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Photoproduction in general-purpose event generators
Systematic comparison of three event generators shows they describe photoproduction data adequately, with PYTHIA and SHERPA performing best, and identifies photon PDF refits plus RIVET measurements as prerequisites for EIC precision.
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Recent Developments in IR-Improved Amplitude-Based Resummation in Precision High Energy Collider Physics
Recent developments in IR-improved amplitude-based resummation are presented for precision observables in high energy collider physics.
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Jarvis-HEP: A lightweight Python framework for workflow composition and parameter scans in high-energy physics
Jarvis-HEP introduces a YAML-based Python framework for composing workflows and performing parameter scans in high-energy physics.
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Light-Ion Collisions: Bridging Small and Large QCD Systems
Light-ion collisions at the LHC provide evidence of quark-gluon plasma formation in small systems, bridging proton-proton and heavy-ion regimes.
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Precision calculations for electroweak multi-boson processes
Electroweak corrections reach about -16% for like-sign WW scattering and -7% for triple-W production at the LHC, even for integrated cross sections, and the paper discusses approximations to full off-shell calculations.
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VBSCan Thessaloniki 2018 Workshop Summary
The document reports the first year of activity of the VBSCan COST Action network on vector-boson scattering phenomenology and experiments from a 2018 workshop.
- Measurement of high-mass $t\bar{t}\ell^{+}\ell^{-}$ production and lepton flavour universality-inspired effective field theory interpretations at $\sqrt{s}=13$ TeV with the ATLAS detector
- Electroweak diboson production in association with a high-mass dijet system in semileptonic final states from $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector