Color-singlet production at NNLO in MCFM

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

doi:10.1140/epjc/s10052-016-4558-y

Color-singlet production at NNLO in MCFM

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

Authors

Radja Boughezal

John M. Campbell

Professor Keith Ellis keith.ellis@durham.ac.uk
Emeritus Professor

Christfried Focke

Walter Giele

Xiaohui Liu

Frank Petriello

Ciaran Williams

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→Hpp→H , pp→Zpp→Z , pp→Wpp→W , pp→HZpp→HZ , pp→HWpp→HW and pp→γγpp→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.

Citation

Boughezal, R., Campbell, J. M., Ellis, R. K., Focke, C., Giele, W., Liu, X., …Williams, C. (2017). Color-singlet production at NNLO in MCFM. The European Physical Journal C, 77(1), Article 7. https://doi.org/10.1140/epjc/s10052-016-4558-y

Journal Article Type	Article
Acceptance Date	Dec 7, 2016
Online Publication Date	Dec 30, 2016
Publication Date	Jan 1, 2017
Deposit Date	Jul 13, 2017
Publicly Available Date	Jul 13, 2017
Journal	European Physical Journal C: Particles and Fields
Print ISSN	1434-6044
Electronic ISSN	1434-6052
Publisher	SpringerOpen
Peer Reviewed	Peer Reviewed
Volume	77
Issue	1
Article Number	7
DOI	https://doi.org/10.1140/epjc/s10052-016-4558-y

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© The Author(s) 2016 Open Access
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