Color-singlet production at NNLO in MCFM

Radja Boughezal, John M. Campbell, R. Keith Ellis, Christfried Focke*, Walter Giele, Xiaohui Liu, Francis John Petriello, Ciaran Williams

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

97 Scopus citations

Abstract

We present the implementation of several color-singlet final-state processes at Next-to-Next-to Leading Order (NNLO) accuracy in QCD to the publicly available parton-level Monte Carlo program MCFM. Specifically we discuss the processes pp→ H, pp→ Z, pp→ W, pp→ HZ, pp→ HW and pp→ γγ. Decays of the unstable bosons are fully included, resulting in a flexible fully differential Monte Carlo code. The NNLO corrections have been calculated using the non-local N-jettiness subtraction approach. Special attention is given to the numerical aspects of running MCFM for these processes at this order. We pay particular attention to the systematic uncertainties due to the power corrections induced by the N-jettiness regularization scheme and the evaluation time needed to run the hybrid openMP/MPI version of MCFM at NNLO on multi-processor systems.

Original languageEnglish (US)
Article number7
JournalEuropean Physical Journal C
Volume77
Issue number1
DOIs
StatePublished - Jan 1 2017

ASJC Scopus subject areas

  • Engineering (miscellaneous)
  • Physics and Astronomy (miscellaneous)

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