Non-local slicing approaches for NNLO QCD in MCFM
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...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2022-06-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP06(2022)002 |
| _version_ | 1827985415932477440 |
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| author | John M. Campbell R. Keith Ellis Satyajit Seth |
| author_facet | John M. Campbell R. Keith Ellis Satyajit Seth |
| author_sort | John M. Campbell |
| collection | DOAJ |
| description | 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, T $$ \mathcal{T} $$ 0, or on q T , the transverse momentum of the colour singlet final-state particles. We find that for most, but not all processes the q T slicing method leads to smaller power corrections for equal computational burden. |
| first_indexed | 2024-04-09T23:14:32Z |
| format | Article |
| id | doaj.art-c9ccbddc3d3d457c9e7752bcb733b9ad |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-04-09T23:14:32Z |
| publishDate | 2022-06-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-c9ccbddc3d3d457c9e7752bcb733b9ad2023-03-22T10:12:53ZengSpringerOpenJournal of High Energy Physics1029-84792022-06-012022613410.1007/JHEP06(2022)002Non-local slicing approaches for NNLO QCD in MCFMJohn M. Campbell0R. Keith Ellis1Satyajit Seth2FermilabInstitute for Particle Physics Phenomenology, Durham UniversityPhysical Research LaboratoryAbstract 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, T $$ \mathcal{T} $$ 0, or on q T , the transverse momentum of the colour singlet final-state particles. We find that for most, but not all processes the q T slicing method leads to smaller power corrections for equal computational burden.https://doi.org/10.1007/JHEP06(2022)002Electroweak Precision PhysicsHigher-Order Perturbative Calculations |
| spellingShingle | John M. Campbell R. Keith Ellis Satyajit Seth Non-local slicing approaches for NNLO QCD in MCFM Journal of High Energy Physics Electroweak Precision Physics Higher-Order Perturbative Calculations |
| title | Non-local slicing approaches for NNLO QCD in MCFM |
| title_full | Non-local slicing approaches for NNLO QCD in MCFM |
| title_fullStr | Non-local slicing approaches for NNLO QCD in MCFM |
| title_full_unstemmed | Non-local slicing approaches for NNLO QCD in MCFM |
| title_short | Non-local slicing approaches for NNLO QCD in MCFM |
| title_sort | non local slicing approaches for nnlo qcd in mcfm |
| topic | Electroweak Precision Physics Higher-Order Perturbative Calculations |
| url | https://doi.org/10.1007/JHEP06(2022)002 |
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