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

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

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

Physics and Astronomy

Research output: Contribution to journal › Article › peer-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 language	English (US)
Article number	7
Journal	European Physical Journal C
Volume	77
Issue number	1
DOIs	https://doi.org/10.1140/epjc/s10052-016-4558-y
State	Published - Jan 1 2017

ASJC Scopus subject areas

Engineering (miscellaneous)
Physics and Astronomy (miscellaneous)

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@article{a4d13badfa884313a2f7d152b019c6e3,

title = "Color-singlet production at NNLO in MCFM",

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.",

author = "Radja Boughezal and Campbell, {John M.} and Ellis, {R. Keith} and Christfried Focke and Walter Giele and Xiaohui Liu and Petriello, {Francis John} and Ciaran Williams",

note = "Funding Information: RKE would like to thank Robert Harlander for helpful discussions. R.??B. is supported by the DOE contract DE-AC02-06CH11357. J.??C. and W.??G. are supported by the DOE contract DE-AC02-07CH11359. C.??F. is supported by the NSF Grant PHY-1520916. X.??L. is supported by the DOE Grant DE-FG02-93ER-40762. F.??P. is supported by the DOE Grants DE-FG02-91ER40684 and DE-AC02-06CH11357. Support was provided by the Center for Computational Research at the University at Buffalo. R.??B., W.??G., X.??L., and F.??P. thank the Kavli Institute for Theoretical Physics at the University of California, Santa Barbara, which is supported by the U. S. National Science Foundation under Grant No. NSF PHY11-25915. C.??W. is supported U. S. National Science Foundation under Grant No. NSF PHY-1619877",

year = "2017",

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doi = "10.1140/epjc/s10052-016-4558-y",

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AU - Boughezal, Radja

AU - Campbell, John M.

AU - Ellis, R. Keith

AU - Focke, Christfried

AU - Giele, Walter

AU - Liu, Xiaohui

AU - Petriello, Francis John

AU - Williams, Ciaran

N1 - Funding Information: RKE would like to thank Robert Harlander for helpful discussions. R.??B. is supported by the DOE contract DE-AC02-06CH11357. J.??C. and W.??G. are supported by the DOE contract DE-AC02-07CH11359. C.??F. is supported by the NSF Grant PHY-1520916. X.??L. is supported by the DOE Grant DE-FG02-93ER-40762. F.??P. is supported by the DOE Grants DE-FG02-91ER40684 and DE-AC02-06CH11357. Support was provided by the Center for Computational Research at the University at Buffalo. R.??B., W.??G., X.??L., and F.??P. thank the Kavli Institute for Theoretical Physics at the University of California, Santa Barbara, which is supported by the U. S. National Science Foundation under Grant No. NSF PHY11-25915. C.??W. is supported U. S. National Science Foundation under Grant No. NSF PHY-1619877

PY - 2017/1/1

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N2 - 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.

AB - 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.

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