Timelike Dipole-Antenna Showers with Massive Fermions

Details Timelike Dipole-Antenna Showers with Massive Fermions Timelike Dipole-Antenna Showers with Massive Fermions

2011-08-31

arxiv.org/abs/1108.6172v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

50 pages

Scientific paper

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.

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