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Search for tt ̄ resonances in fully hadronic final states in pp collisions at √s = 13 TeV with the ATLAS detector

Aad G.
•
Abbott B.
•
Abbott D. C.
altro
Zwalinski L.
2020
  • journal article

Periodico
JOURNAL OF HIGH ENERGY PHYSICS
Abstract
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. [Figure not available: see fulltext.]
DOI
10.1007/JHEP10(2020)061
WOS
WOS:000579438800001
Archivio
http://hdl.handle.net/11390/1193799
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85092905089
Diritti
open access
Soggetti
  • Beyond Standard Model...

  • Hadron-Hadron scatter...

  • Heavy quark productio...

  • Jet substructure

  • Jets

Scopus© citazioni
9
Data di acquisizione
Jun 14, 2022
Vedi dettagli
Web of Science© citazioni
14
Data di acquisizione
Mar 26, 2024
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