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Stefan Prestel. Photo.

Stefan Prestel

Associate senior lecturer

Stefan Prestel. Photo.

Combining states without scale hierarchies with ordered parton showers

Author

  • Nadine Fischer
  • Stefan Prestel

Summary, in English

We present a parameter-free scheme to combine fixed-order multi-jet results with parton-shower evolution. The scheme produces jet cross sections with leading-order accuracy in the complete phase space of multiple emissions, resumming large logarithms when appropriate, while not arbitrarily enforcing ordering on momentum configurations beyond the reach of the parton-shower evolution equation. This requires the development of a matrix-element correction scheme for complex phase-spaces including ordering conditions as well as a systematic scale-setting procedure for unordered phase-space points. The resulting algorithm does not require a merging-scale parameter. We implement the new method in the Vincia framework and compare to LHC data.

Publishing year

2017-09-01

Language

English

Publication/Series

European Physical Journal C

Volume

77

Issue

9

Document type

Journal article

Publisher

Springer

Status

Published

ISBN/ISSN/Other

  • ISSN: 1434-6044