Impact of rare decays t → ℓ'νbℓℓ and t → qq'bℓℓ on searches for top-associated physics

Onyisi, P.; Webb, A.

doi:10.1007/jhep02(2018)156

Title: Impact of rare decays t → ℓ'νbℓℓ and t → qq'bℓℓ on searches for top-associated physics

Journal Article · Mon Feb 26 00:00:00 EST 2018 · Journal of High Energy Physics (Online)

DOI:https://doi.org/10.1007/jhep02(2018)156· OSTI ID:1505218

^[1]; Webb, A. ^[1]

Univ. of Texas, Austin, TX (United States). Dept. of Physics

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.

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Research Organization:: Univ. of Texas, Austin, TX (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP)

Grant/Contract Number:: SC0007890

OSTI ID:: 1505218

Journal Information:: Journal of High Energy Physics (Online), Vol. 2018, Issue 2; ISSN 1029-8479

Publisher:: Springer BerlinCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 1 work

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References (9)

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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 Aad, Georges; Abbott, Brad; Abbott, Dale Charles Deutsches Elektronen-Synchrotron, DESY, Hamburg https://doi.org/10.3204/pubdb-2019-05171	text	January 2019
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 Aad, Georges; Abbott, Brad; Abbott, Dale Charles Deutsches Elektronen-Synchrotron, DESY, Hamburg https://doi.org/10.3204/pubdb-2020-02572	text	January 2020
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 Aad, G.; Abbott, B.; Abbott, D. C. Apollo - University of Cambridge Repository https://doi.org/10.17863/cam.70881	text	January 2020

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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Hadron-Hadron scattering (experiments)
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Rare decay
Top physics

Title: Impact of rare decays t → ℓ'νbℓℓ and t → qq'bℓℓ on searches for top-associated physics

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