Franconi, Laura; Haug, Sigve; Weber, Michele; Anders, John Kenneth; Fehr, Armin; Beck, Hans Peter; Ereditato, Antonio; Lehmann, Niklaus; Miucci, Antonio; Weston, Thomas Daniel (2020). Search for tøverlinet resonances in fully hadronic final states in pp collisions at \sqrts = 13 TeV with the ATLAS detector. Journal of High Energy Physics, 2020(10) Springer 10.1007/JHEP10(2020)061
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Aad2020_Article_SearchForTtTOverlineTResonance.pdf - Published Version Available under License Creative Commons: Attribution (CC-BY). Download (1MB) | Preview |
This paper presents a search for new heavy particles decaying into a pair of top quarks using 139 fb−1 of proton-proton collision data recorded at a centre-of-mass energy of s√ = 13 TeV with the ATLAS detector at the Large Hadron Collider. The search is performed using events consistent with pair production of high-transverse-momentum top quarks and their subsequent decays into the fully hadronic final states. The analysis is optimized for resonances decaying into a tt¯ pair with mass above 1.4 TeV, exploiting a dedicated multivariate technique with jet substructure to identify hadronically decaying top quarks using large-radius jets and evaluating the background expectation from data. No significant deviation from the background prediction is observed. Limits are set on the production cross-section times branching fraction for the new Z′ boson in a topcolor-assisted-technicolor model. The Z′ boson masses below 3.9 and 4.7 TeV are excluded at 95% confidence level for the decay widths of 1% and 3%, respectively.
Item Type: |
Journal Article (Original Article) |
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Division/Institute: |
08 Faculty of Science > Physics Institute > Laboratory for High Energy Physics (LHEP) 08 Faculty of Science > Physics Institute 10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC) |
UniBE Contributor: |
Franconi, Laura, Haug, Sigve, Weber, Michele, Anders, John Kenneth, Ilg, Armin, Beck, Hans Peter, Ereditato, Antonio, Lehmann, Niklaus, Miucci, Antonio, Weston, Thomas Daniel |
Subjects: |
500 Science > 530 Physics 500 Science > 510 Mathematics |
ISSN: |
1029-8479 |
Publisher: |
Springer |
Language: |
English |
Submitter: |
BORIS Import LHEP |
Date Deposited: |
20 Apr 2021 17:31 |
Last Modified: |
02 Mar 2023 23:34 |
Publisher DOI: |
10.1007/JHEP10(2020)061 |
Additional Information: |
Kollaboration - Es sind nur die Berner Autoren namentlich erwaehnt |
BORIS DOI: |
10.48350/155562 |
URI: |
https://boris.unibe.ch/id/eprint/155562 |
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