NNLOPS accurate predictions for W + W − production
Abstract We present novel predictions for the production of W + W − pairs in hadron collisions that are next-to-next-to-leading order accurate and consistently matched to a parton shower (NNLOPS). All diagrams that lead to the process pp → e − ν ¯ e μ + ν μ + X $$ pp\to {e}^{-}{\overline{\nu}}_e{\mu...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2018-12-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1007/JHEP12(2018)121 |
| _version_ | 1818150620271476736 |
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| author | Emanuele Re Marius Wiesemann Giulia Zanderighi |
| author_facet | Emanuele Re Marius Wiesemann Giulia Zanderighi |
| author_sort | Emanuele Re |
| collection | DOAJ |
| description | Abstract We present novel predictions for the production of W + W − pairs in hadron collisions that are next-to-next-to-leading order accurate and consistently matched to a parton shower (NNLOPS). All diagrams that lead to the process pp → e − ν ¯ e μ + ν μ + X $$ pp\to {e}^{-}{\overline{\nu}}_e{\mu}^{+}{\nu}_{\mu }+X $$ are taken into account, thereby including spin correlations and off-shell effects. For the first time full NNLOPS accuracy is achieved for a 2 → 4 process. We find good agreement, at the 1σ level, with the W + W − rates measured by ATLAS and CMS. The importance of NNLOPS predictions is evident from differential distributions sensitive to soft-gluon effects and from the large impact (10% and more) of including next-to-next-to-leading order corrections on top of MiNLO. We define a charge asymmetry for the W bosons and the leptons in W + W − production at the LHC, which is sensitive to the W polarizations and hence can be used as a probe of new physics. |
| first_indexed | 2024-12-11T13:25:49Z |
| format | Article |
| id | doaj.art-d4d8f39a4e86461181784e7ddd0a0e55 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-12-11T13:25:49Z |
| publishDate | 2018-12-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-d4d8f39a4e86461181784e7ddd0a0e552022-12-22T01:05:34ZengSpringerOpenJournal of High Energy Physics1029-84792018-12-0120181214010.1007/JHEP12(2018)121NNLOPS accurate predictions for W + W − productionEmanuele Re0Marius Wiesemann1Giulia Zanderighi2Theoretical Physics Department, CERNTheoretical Physics Department, CERNTheoretical Physics Department, CERNAbstract We present novel predictions for the production of W + W − pairs in hadron collisions that are next-to-next-to-leading order accurate and consistently matched to a parton shower (NNLOPS). All diagrams that lead to the process pp → e − ν ¯ e μ + ν μ + X $$ pp\to {e}^{-}{\overline{\nu}}_e{\mu}^{+}{\nu}_{\mu }+X $$ are taken into account, thereby including spin correlations and off-shell effects. For the first time full NNLOPS accuracy is achieved for a 2 → 4 process. We find good agreement, at the 1σ level, with the W + W − rates measured by ATLAS and CMS. The importance of NNLOPS predictions is evident from differential distributions sensitive to soft-gluon effects and from the large impact (10% and more) of including next-to-next-to-leading order corrections on top of MiNLO. We define a charge asymmetry for the W bosons and the leptons in W + W − production at the LHC, which is sensitive to the W polarizations and hence can be used as a probe of new physics.http://link.springer.com/article/10.1007/JHEP12(2018)121NLO ComputationsQCD Phenomenology |
| spellingShingle | Emanuele Re Marius Wiesemann Giulia Zanderighi NNLOPS accurate predictions for W + W − production Journal of High Energy Physics NLO Computations QCD Phenomenology |
| title | NNLOPS accurate predictions for W + W − production |
| title_full | NNLOPS accurate predictions for W + W − production |
| title_fullStr | NNLOPS accurate predictions for W + W − production |
| title_full_unstemmed | NNLOPS accurate predictions for W + W − production |
| title_short | NNLOPS accurate predictions for W + W − production |
| title_sort | nnlops accurate predictions for w w production |
| topic | NLO Computations QCD Phenomenology |
| url | http://link.springer.com/article/10.1007/JHEP12(2018)121 |
| work_keys_str_mv | AT emanuelere nnlopsaccuratepredictionsforwwproduction AT mariuswiesemann nnlopsaccuratepredictionsforwwproduction AT giuliazanderighi nnlopsaccuratepredictionsforwwproduction |