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Search for tb Resonances 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
PHYSICAL REVIEW LETTERS
Abstract
This Letter presents a search for tb resonances in 1.04fb-1 of LHC proton-proton collision data collected by the ATLAS detector at a center-of-mass energy of 7 TeV. Events with a lepton, missing transverse momentum, and two jets are selected and the invariant mass of the corresponding final state is reconstructed. The search exploits the shape of the tb invariant mass distribution compared to the expected standard model backgrounds. The model of a right-handed WR′ with standard model-like couplings is chosen as the benchmark model for this search. No statistically significant excess of events is observed in the data, and upper limits on the cross section times the branching ratio of WR′ resonances at 95% C.L. lie in the range of 6.1-1.0 pb for WR′ masses ranging from 0.5 to 2.0 TeV. These limits are translated into a lower bound on the allowed right-handed WR′ mass, giving m WR′>1.13TeV at 95% C.L
DOI
10.1103/PhysRevLett.109.081801
WOS
WOS:000307712400003
Archivio
http://hdl.handle.net/11390/884595
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84865277349
Diritti
metadata only access
Web of Science© citazioni
31
Data di acquisizione
Mar 26, 2024
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