Fixed-order and merged parton-shower predictions for WW and WWj production at the LHC including NLO QCD and EW corrections
Abstract First, we present a combined analysis of pp → μ + v μ e − v ¯ e $$ \to {\mu}^{+}{v}_{\mu }{\mathrm{e}}^{-}{\overline{v}}_{\mathrm{e}} $$ and pp → μ + v μ e − v ¯ e j $$ \to {\mu}^{+}{v}_{\mu }{\mathrm{e}}^{-}{\overline{v}}_{\mathrm{e}}\mathrm{j} $$ at next-to-leading order, including both Q...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2020-10-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1007/JHEP10(2020)159 |
| _version_ | 1819295365870911488 |
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| author | Stephan Bräuer Ansgar Denner Mathieu Pellen Marek Schönherr Steffen Schumann |
| author_facet | Stephan Bräuer Ansgar Denner Mathieu Pellen Marek Schönherr Steffen Schumann |
| author_sort | Stephan Bräuer |
| collection | DOAJ |
| description | Abstract First, we present a combined analysis of pp → μ + v μ e − v ¯ e $$ \to {\mu}^{+}{v}_{\mu }{\mathrm{e}}^{-}{\overline{v}}_{\mathrm{e}} $$ and pp → μ + v μ e − v ¯ e j $$ \to {\mu}^{+}{v}_{\mu }{\mathrm{e}}^{-}{\overline{v}}_{\mathrm{e}}\mathrm{j} $$ at next-to-leading order, including both QCD and electroweak corrections. Second, we provide all-order predictions for pp → μ + v μ e − v ¯ e + $$ \to {\mu}^{+}{v}_{\mu }{\mathrm{e}}^{-}{\overline{v}}_{\mathrm{e}}+ $$ jets using merged parton-shower simulations that also include approximate EW effects. A fully inclusive sample for WW production is compared to the fixed-order computations for exclusive zero- and one-jet selections. The various higher-order effects are studied in detail at the level of cross sections and differential distributions for realistic experimental set-ups. Our study confirms that merged predictions are significantly more stable than the fixed-order ones in particular regarding ratios between the two processes. |
| first_indexed | 2024-12-24T04:41:04Z |
| format | Article |
| id | doaj.art-7bbc676a70fa47658ba7214bef92b5e5 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-12-24T04:41:04Z |
| publishDate | 2020-10-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-7bbc676a70fa47658ba7214bef92b5e52022-12-21T17:14:49ZengSpringerOpenJournal of High Energy Physics1029-84792020-10-0120201014710.1007/JHEP10(2020)159Fixed-order and merged parton-shower predictions for WW and WWj production at the LHC including NLO QCD and EW correctionsStephan Bräuer0Ansgar Denner1Mathieu Pellen2Marek Schönherr3Steffen Schumann4Georg-August Universität Göttingen, Institut für Theoretische PhysikUniversität Würzburg, Institut für Theoretische Physik und AstrophysikUniversity of Cambridge, Cavendish LaboratoryInstitute for Particle Physics Phenomenology, Durham UniversityGeorg-August Universität Göttingen, Institut für Theoretische PhysikAbstract First, we present a combined analysis of pp → μ + v μ e − v ¯ e $$ \to {\mu}^{+}{v}_{\mu }{\mathrm{e}}^{-}{\overline{v}}_{\mathrm{e}} $$ and pp → μ + v μ e − v ¯ e j $$ \to {\mu}^{+}{v}_{\mu }{\mathrm{e}}^{-}{\overline{v}}_{\mathrm{e}}\mathrm{j} $$ at next-to-leading order, including both QCD and electroweak corrections. Second, we provide all-order predictions for pp → μ + v μ e − v ¯ e + $$ \to {\mu}^{+}{v}_{\mu }{\mathrm{e}}^{-}{\overline{v}}_{\mathrm{e}}+ $$ jets using merged parton-shower simulations that also include approximate EW effects. A fully inclusive sample for WW production is compared to the fixed-order computations for exclusive zero- and one-jet selections. The various higher-order effects are studied in detail at the level of cross sections and differential distributions for realistic experimental set-ups. Our study confirms that merged predictions are significantly more stable than the fixed-order ones in particular regarding ratios between the two processes.http://link.springer.com/article/10.1007/JHEP10(2020)159NLO ComputationsQCD Phenomenology |
| spellingShingle | Stephan Bräuer Ansgar Denner Mathieu Pellen Marek Schönherr Steffen Schumann Fixed-order and merged parton-shower predictions for WW and WWj production at the LHC including NLO QCD and EW corrections Journal of High Energy Physics NLO Computations QCD Phenomenology |
| title | Fixed-order and merged parton-shower predictions for WW and WWj production at the LHC including NLO QCD and EW corrections |
| title_full | Fixed-order and merged parton-shower predictions for WW and WWj production at the LHC including NLO QCD and EW corrections |
| title_fullStr | Fixed-order and merged parton-shower predictions for WW and WWj production at the LHC including NLO QCD and EW corrections |
| title_full_unstemmed | Fixed-order and merged parton-shower predictions for WW and WWj production at the LHC including NLO QCD and EW corrections |
| title_short | Fixed-order and merged parton-shower predictions for WW and WWj production at the LHC including NLO QCD and EW corrections |
| title_sort | fixed order and merged parton shower predictions for ww and wwj production at the lhc including nlo qcd and ew corrections |
| topic | NLO Computations QCD Phenomenology |
| url | http://link.springer.com/article/10.1007/JHEP10(2020)159 |
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