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Photo of Rikkert Frederix

Rikkert Frederix

Senior lecturer

Photo of Rikkert Frederix

Amcfast : Automation of fast NLO computations for PDF fits

Author

  • Valerio Bertone
  • Rikkert Frederix
  • Stefano Frixione
  • Juan Rojo
  • Mark Sutton

Summary, in English

We present the interface between MadGraph5-aMC@NLO, a self-contained program that calculates cross sections up to next-to-leading order accuracy in an automated manner, and APPLgrid, a code that parametrises such cross sections in the form of look-up tables which can be used for the fast computations needed in the context of PDF fits. The main characteristic of this interface, which we dub aMCfast, is its being fully automated as well, which removes the need to extract manually the process-specific information for additional physics processes, as is the case with other matrix-element calculators, and renders it straightforward to include any new process in the PDF fits. We demonstrate this by studying several cases which are easily measured at the LHC, have a good constraining power on PDFs, and some of which were previously unavailable in the form of a fast interface.

Publishing year

2014-08

Language

English

Publication/Series

Journal of High Energy Physics

Volume

2014

Issue

8

Document type

Journal article

Publisher

Springer

Topic

  • Other Physics Topics

Keywords

  • NLO Computations
  • QCD Phenomenology

Status

Published

ISBN/ISSN/Other

  • ISSN: 1029-8479