Non-local slicing approaches for NNLO QCD in MCFM

Campbell, John M.; Ellis, R. Keith; Seth, Satyajit

doi:10.1007/jhep06(2022)002

Non-local slicing approaches for NNLO QCD in MCFM

Campbell, John M.; Ellis, R. Keith; Seth, Satyajit

Authors

John M. Campbell

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

Satyajit Seth

Abstract

We present the implementation of several processes at Next-to-Next-to Leading Order (NNLO) accuracy in QCD in the parton-level Monte Carlo program MCFM. The processes treated are pp → H, W±, Z, W±H, ZH, W±γ, Zγ and γγ and, for the first time in the code, W+W−, W±Z and ZZ. Decays of the unstable bosons are fully included, resulting in a flexible fully differential Monte Carlo code. The NNLO corrections have been calculated using two non-local slicing approaches, isolating the doubly unresolved region by cutting on the zero-jettiness, T0, or on qT , the transverse momentum of the colour singlet final-state particles. We find that for most, but not all processes the qT slicing method leads to smaller power corrections for equal computational burden.

Citation

Campbell, J. M., Ellis, R. K., & Seth, S. (2022). Non-local slicing approaches for NNLO QCD in MCFM. Journal of High Energy Physics, 2022(6), Article 2. https://doi.org/10.1007/jhep06%282022%29002

Journal Article Type	Article
Acceptance Date	May 2, 2022
Online Publication Date	Jun 1, 2022
Publication Date	2022-06
Deposit Date	Jul 8, 2022
Publicly Available Date	Jul 8, 2022
Journal	Journal of High Energy Physics
Print ISSN	1126-6708
Electronic ISSN	1029-8479
Publisher	Scuola Internazionale Superiore di Studi Avanzati (SISSA)
Peer Reviewed	Peer Reviewed
Volume	2022
Issue	6
Article Number	2
DOI	https://doi.org/10.1007/jhep06%282022%29002

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