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 $$ t\overline{t}\ $$W or $$ t\overline{t}\ $$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.
- Publication Date:
- Research Org.:
- Univ. of Texas, Austin, TX (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- OSTI Identifier:
- 1505218
- Grant/Contract Number:
- SC0007890
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of High Energy Physics (Online)
- Additional Journal Information:
- Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2018; Journal Issue: 2; Journal ID: ISSN 1029-8479
- Publisher:
- Springer Berlin
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Hadron-Hadron scattering (experiments); Higgs physics; Rare decay; Top physics
Citation Formats
Onyisi, P., and Webb, A. Impact of rare decays t → ℓ'νbℓℓ and t → qq'bℓℓ on searches for top-associated physics. United States: N. p., 2018.
Web. doi:10.1007/jhep02(2018)156.
Onyisi, P., & Webb, A. Impact of rare decays t → ℓ'νbℓℓ and t → qq'bℓℓ on searches for top-associated physics. United States. doi:10.1007/jhep02(2018)156.
Onyisi, P., and Webb, A. Mon .
"Impact of rare decays t → ℓ'νbℓℓ and t → qq'bℓℓ on searches for top-associated physics". United States. doi:10.1007/jhep02(2018)156. https://www.osti.gov/servlets/purl/1505218.
@article{osti_1505218,
title = {Impact of rare decays t → ℓ'νbℓℓ and t → qq'bℓℓ on searches for top-associated physics},
author = {Onyisi, P. and Webb, A.},
abstractNote = {Searches for top quark-associated physics such as $ t\overline{t}\ $W or $ 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.},
doi = {10.1007/jhep02(2018)156},
journal = {Journal of High Energy Physics (Online)},
number = 2,
volume = 2018,
place = {United States},
year = {2018},
month = {2}
}
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Works referencing / citing this record:
Search for squarks and gluinos in final states with same-sign leptons and jets using 139 fb−1 of data collected with the ATLAS detector
journal, June 2020
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- Journal of High Energy Physics, Vol. 2020, Issue 6