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Search for W’→tb→qqbb decays in collisions at √ = 8 TeV with the ATLAS detector

Aad, G.
•
Abbott, B.
•
Abdallah, J.
altro
Zwalinski, L.
2015
  • journal article

Periodico
THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS
Abstract
A search for a massive W′ gauge boson decaying to a top quark and a bottom quark is performed with the ATLAS detector in pp collisions at the LHC. The datasetwas taken at a centre-of-mass energy of √s = 8 TeV and corresponds to 20.3 fb−1 of integrated luminosity. This analysis is done in the hadronic decay mode of the top quark, where novel jet substructure techniques are used to identify jets from high-momentum top quarks. This allows for a search for high-mass W′ bosons in the range 1.5-3.0 TeV. b-tagging is used to identify jets originating from b-quarks. The data are consistent with Standard Model background-only expectations, and upper limits at 95%confidence level are set on the W′ → tb cross section times branching ratio ranging from 0.16 pb to 0.33 pb for left-handed W′ bosons, and ranging from 0.10 pb to 0.21 pb for W′ bosons with purely righthanded couplings. Upper limits at 95% confidence level are set on the W′-boson coupling to tb as a function of the W′ mass using an effective field theory approach, which is independent of details of particular models predicting a W′ boson.
DOI
10.1140/epjc/s10052-015-3372-2
WOS
WOS:000355671700005
Archivio
http://hdl.handle.net/11390/1096103
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84951869663
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84951869663&partnerID=40&md5=20a789bbfba2f7dca5c41d51d079ebe5
Diritti
metadata only access
Soggetti
  • Physics and Astronomy...

  • Engineering (miscella...

Scopus© citazioni
30
Data di acquisizione
Jun 14, 2022
Vedi dettagli
Web of Science© citazioni
35
Data di acquisizione
Mar 19, 2024
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