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Search for heavy vector-like quarks coupling to light quarks in proton-proton collisions at root s=7 TeV with the ATLAS detector

Aad G.
•
Abbott B.
•
Abdallah J.
altro
Zwalinski L.
2012
  • journal article

Periodico
PHYSICS LETTERS. SECTION B
Abstract
This Letter presents a search for singly produced vector-like quarks, Q, coupling to light quarks, q. The search is sensitive to both charged current (CC) and neutral current (NC) processes, pp -> Qq -> Wqq' and pp -> Qq -> Zqq' with a leptonic decay of the vector gauge boson. In 1.04 fb(-1) of data taken in 2011 by the ATLAS experiment at a center-of-mass energy root s = 7 TeV, no evidence of such heavy vector-like quarks is observed above the expected Standard Model background. Limits on the heavy vector-like quark production cross section times branching ratio as a function of mass m(Q) are obtained. For a coupling K-qQ = v/m(Q), where v is the Higgs vacuum expectation value, 95% C.L. lower limits on the mass of a vector-like quark are set at 900 GeV and 760 GeV from CC and NC processes, respectively.
DOI
10.1016/j.physletb.2012.03.082
WOS
WOS:000304742500005
Archivio
http://hdl.handle.net/11390/884329
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84938558299
Diritti
metadata only access
Scopus© citazioni
34
Data di acquisizione
Jun 7, 2022
Vedi dettagli
Web of Science© citazioni
40
Data di acquisizione
Mar 25, 2024
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