Multipole Photon Radiation in the Vincia Parton Shower

Abstract

We present algorithms that interleave photon radiation from the final state and the initial state with the QCD evolution in the antenna-based Vincia parton shower. One of the algorithms incorporates the complete soft and collinear structure associated with photon emission, but may be computationally expensive, while the other approximates the soft structure at a lower cost. Radiation from fermions and W bosons is included, and a strategy for photon radiation off leptons below the hadronization scale is set up. We show results of the application of the shower algorithms to Drell-Yan and WW production at the LHC, showing the impact of the inclusion of the full soft structure and treatment of radiation off W bosons.

arXiv comment12 pages, 3 figures

References in corpus (27)

• 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
• Event generation with SHERPA 1.1
• Herwig++ Physics and Manual
• Parton distributions with LHC data
• Rivet user manual
• General-purpose event generators for LHC physics
• Transverse-Momentum-Ordered Showers and Interleaved Multiple Interactions
• A General Approach To Photon Radiation Off Fermions
• Measurement of the $W$-boson mass in pp collisions at $\sqrt{s}=7$ TeV with the ATLAS detector
• One-loop Singular Behaviour of QCD and SUSY QCD Amplitudes with Massive Partons
• A simple shower and matching algorithm
• Soft Photon Radiation in Particle Decays in SHERPA
• Higher-Order Corrections to Timelike Jets
• Vincia for Hadron Colliders
• Antenna subtraction for the production of heavy particles at hadron colliders
• Fooling Around with the Sudakov Veto Algorithm
• Lineshape of the Higgs boson in future lepton colliders
• ISR effects for resonant Higgs production at future lepton colliders
• Simulation of QED Radiation in Particle decays using the YFS Formalism
• Timelike Dipole-Antenna Showers with Massive Fermions
• Coherent Showers in Decays of Colored Resonances
• Efficient Matrix-Element Matching with Sector Showers
• Competing Sudakov Veto Algorithms
• Systematic Studies of Exact $\mathcal{O}({\alpha }^{2}L)$ CEEX EW Corrections in a Hadronic MC for Precision $Z/{\gamma }^{\ast }$ Physics at LHC Energies
• Initial-Final-State Interference in the Z line-shape
• QED Interference in Charge Asymmetry Near the Z Resonance at Future Electron-Positron Colliders

Cited by in corpus (9)

• Event Generators for High-Energy Physics Experiments
• Les Houches 2021: Physics at TeV Colliders: Report on the Standard Model Precision Wishlist
• Efficient multi-jet merging with the Vincia sector shower
• NLO + parton-shower generator for Wc production in the POWHEG BOX RES
• Exploring the Universality of Hadronic Jet Classification
• Sudakov evolution without unitarity
• A background for thermal photons in heavy ion collisions
• Monte Carlo Event Generators for Future Lepton Colliders
• Coloring mixed QCD/QED evolution