Impact of rare decays t → ℓ′νbℓℓ and t → qq ′ bℓℓ on searches for top-associated physics
Abstract Searches for top quark-associated physics such as tt¯W $$ t\overline{t}W $$ or tt¯H $$ t\overline{t}H $$ in final states with multiple leptons require a careful accounting of expected backgrounds due to the lack of reconstructible resonances. We demonstrate that the rare top quark decays t...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2018-02-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1007/JHEP02(2018)156 |
| _version_ | 1811263020350832640 |
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| author | P. Onyisi A. Webb |
| author_facet | P. Onyisi A. Webb |
| author_sort | P. Onyisi |
| collection | DOAJ |
| description | Abstract Searches for top quark-associated physics such as tt¯W $$ t\overline{t}W $$ or tt¯H $$ t\overline{t}H $$ in final states with multiple leptons require a careful accounting of expected backgrounds due to the lack of reconstructible resonances. We demonstrate that the rare top quark decays t → ℓ′νbℓℓ and t → qq ′ bℓℓ, when a soft lepton is not detected, can contribute a non-negligible background to such searches. Simulations in the LHC experiments typically do not account for such decays and as such backgrounds to such searches may be underestimated. |
| first_indexed | 2024-04-12T19:37:25Z |
| format | Article |
| id | doaj.art-3484210ff15449129df61d28e1a4ee04 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-04-12T19:37:25Z |
| publishDate | 2018-02-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-3484210ff15449129df61d28e1a4ee042022-12-22T03:19:10ZengSpringerOpenJournal of High Energy Physics1029-84792018-02-012018211310.1007/JHEP02(2018)156Impact of rare decays t → ℓ′νbℓℓ and t → qq ′ bℓℓ on searches for top-associated physicsP. Onyisi0A. Webb1Department of Physics, University of Texas at AustinDepartment of Physics, University of Texas at AustinAbstract Searches for top quark-associated physics such as tt¯W $$ t\overline{t}W $$ or tt¯H $$ t\overline{t}H $$ in final states with multiple leptons require a careful accounting of expected backgrounds due to the lack of reconstructible resonances. We demonstrate that the rare top quark decays t → ℓ′νbℓℓ and t → qq ′ bℓℓ, when a soft lepton is not detected, can contribute a non-negligible background to such searches. Simulations in the LHC experiments typically do not account for such decays and as such backgrounds to such searches may be underestimated.http://link.springer.com/article/10.1007/JHEP02(2018)156Hadron-Hadron scattering (experiments)Higgs physicsRare decayTop physics |
| spellingShingle | P. Onyisi A. Webb Impact of rare decays t → ℓ′νbℓℓ and t → qq ′ bℓℓ on searches for top-associated physics Journal of High Energy Physics Hadron-Hadron scattering (experiments) Higgs physics Rare decay Top physics |
| title | Impact of rare decays t → ℓ′νbℓℓ and t → qq ′ bℓℓ on searches for top-associated physics |
| title_full | Impact of rare decays t → ℓ′νbℓℓ and t → qq ′ bℓℓ on searches for top-associated physics |
| title_fullStr | Impact of rare decays t → ℓ′νbℓℓ and t → qq ′ bℓℓ on searches for top-associated physics |
| title_full_unstemmed | Impact of rare decays t → ℓ′νbℓℓ and t → qq ′ bℓℓ on searches for top-associated physics |
| title_short | Impact of rare decays t → ℓ′νbℓℓ and t → qq ′ bℓℓ on searches for top-associated physics |
| title_sort | impact of rare decays t l νbll and t qq bll on searches for top associated physics |
| topic | Hadron-Hadron scattering (experiments) Higgs physics Rare decay Top physics |
| url | http://link.springer.com/article/10.1007/JHEP02(2018)156 |
| work_keys_str_mv | AT ponyisi impactofraredecaystlnbllandtqqbllonsearchesfortopassociatedphysics AT awebb impactofraredecaystlnbllandtqqbllonsearchesfortopassociatedphysics |