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...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
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 |
| Summary: | 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. |
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| ISSN: | 1029-8479 |