Timelike Dipole-Antenna Showers with Massive Fermions

We present a complete formalism for final-state (timelike) dipole-antenna showers including fermion masses, but neglecting polarization and finite-width effects. We make several comparisons of tree-level expansions of this shower algorithm to fixed-order matrix elements for hadronic Z decays, up to...

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Detalles Bibliográficos
Autores principales: Gehrmann-De Ridder, Aude, Ritzmann, Mathias, Skands, Peter Z.
Lenguaje:eng
Publicado: 2011
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1103/PhysRevD.85.014013
http://cds.cern.ch/record/1378990
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author Gehrmann-De Ridder, Aude
Ritzmann, Mathias
Skands, Peter Z.
author_facet Gehrmann-De Ridder, Aude
Ritzmann, Mathias
Skands, Peter Z.
author_sort Gehrmann-De Ridder, Aude
collection CERN
description We present a complete formalism for final-state (timelike) dipole-antenna showers including fermion masses, but neglecting polarization and finite-width effects. We make several comparisons of tree-level expansions of this shower algorithm to fixed-order matrix elements for hadronic Z decays, up to and including Z to 6 partons, to which the algorithm can be consistently matched over all of phase space. We also compare to analytical resummations at the NLL level. The shower algorithm has been implemented in the publicly available VINCIA plugin to the PYTHIA 8 event generator, which enables us to compare to experimental data at the fully hadronized level. We also include comparisons to selected observables in b-tagged Z decays.
id cern-1378990
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2011
record_format invenio
spelling cern-13789902019-09-30T06:29:59Zdoi:10.1103/PhysRevD.85.014013http://cds.cern.ch/record/1378990engGehrmann-De Ridder, AudeRitzmann, MathiasSkands, Peter Z.Timelike Dipole-Antenna Showers with Massive FermionsParticle Physics - PhenomenologyWe present a complete formalism for final-state (timelike) dipole-antenna showers including fermion masses, but neglecting polarization and finite-width effects. We make several comparisons of tree-level expansions of this shower algorithm to fixed-order matrix elements for hadronic Z decays, up to and including Z to 6 partons, to which the algorithm can be consistently matched over all of phase space. We also compare to analytical resummations at the NLL level. The shower algorithm has been implemented in the publicly available VINCIA plugin to the PYTHIA 8 event generator, which enables us to compare to experimental data at the fully hadronized level. We also include comparisons to selected observables in b-tagged Z decays.We present a complete formalism for final-state (timelike) dipole-antenna showers including fermion masses, but neglecting polarization and finite-width effects. We make several comparisons of tree-level expansions of this shower algorithm to fixed-order matrix elements for hadronic Z decays, up to and including Z to 6 partons, to which the algorithm can be consistently matched over all of phase space. We also compare to analytical resummations at the NLL level. The shower algorithm has been implemented in the publicly available VINCIA plugin to the PYTHIA 8 event generator, which enables us to compare to experimental data at the fully hadronized level. We also include comparisons to selected observables in b-tagged Z decays.arXiv:1108.6172CERN-TH-2011-133MCNET-11-19CERN-TH-2011-133; MCNET-11-19MCNET-11-19CERN-PH-TH-2011-133oai:cds.cern.ch:13789902011-09-01
spellingShingle Particle Physics - Phenomenology
Gehrmann-De Ridder, Aude
Ritzmann, Mathias
Skands, Peter Z.
Timelike Dipole-Antenna Showers with Massive Fermions
title Timelike Dipole-Antenna Showers with Massive Fermions
title_full Timelike Dipole-Antenna Showers with Massive Fermions
title_fullStr Timelike Dipole-Antenna Showers with Massive Fermions
title_full_unstemmed Timelike Dipole-Antenna Showers with Massive Fermions
title_short Timelike Dipole-Antenna Showers with Massive Fermions
title_sort timelike dipole-antenna showers with massive fermions
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1103/PhysRevD.85.014013
http://cds.cern.ch/record/1378990
work_keys_str_mv AT gehrmannderidderaude timelikedipoleantennashowerswithmassivefermions
AT ritzmannmathias timelikedipoleantennashowerswithmassivefermions
AT skandspeterz timelikedipoleantennashowerswithmassivefermions

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