A search for flavour changing neutral currents in top-quark decays in pp collision data collected with the ATLAS detector at sqrt(s) = 7 TeV

@inproceedings{Collaboration2012ASF,
  title={A search for flavour changing neutral currents in top-quark decays in pp collision data collected with the ATLAS detector at sqrt(s) = 7 TeV},
  author={Atlas Collaboration},
  year={2012}
}
A search for flavour changing neutral current (FCNC) processes in top-quark decays by the ATLAS Collaboration is presented. Data collected from pp collisions at the LHC at a centre-of-mass energy of √ s = 7 TeV during 2011, corresponding to an integrated luminosity of 2.1 fb−1, were used. A search was performed for top-quark pair-production events, with one top quark decaying through the t → Zq FCNC (q = u, c) channel, and the other through the Standard Model dominant mode t → Wb. Only the… Expand

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References

SHOWING 1-10 OF 77 REFERENCES
Measurement of the cross section for top-quark pair production in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector using final states with two high-pt leptons
A measurement is reported of the production cross section of top-quark pairs (tt̄) in proton-proton collisions at a center-of-mass energy of 7 TeV recorded with the ATLAS detector at the LHC.Expand
Search for flavor changing neutral currents in decays of top quarks
We present a search for flavor changing neutral currents in decays of top quarks. The analysis is based on a search for t ¯ t → ℓ ′ νℓ ¯ ℓ+jets (ℓ, ℓ ′ = e, µ) final states using 4.1 fb −1 ofExpand
Measurement of the top quark-pair production cross section with ATLAS in pp collisions at √ s = 7 TeV
A measurement of the production cross-section for top quark pairs (t t̄) in pp collisions at √ s = 7 TeV is presented using data recorded with the ATLAS detector at the Large Hadron Collider. EventsExpand
Search for single top quark production in ep collisions at HERA
A search for single top quark production is performed in e(+/-) pcollisions at HERA. The search exploits data corresponding to an integrated luminosity of 118.3 pb(-1). A model for the anomalousExpand
Loop induced flavor changing neutral decays of the top quark in a general two Higgs doublet model
Decays of the top quark induced by flavor changing neutral currents (FCNC) are known to be extremely rare events within the Standard Model. This is so not only for the decay modes into gauge bosons,Expand
Search for top-quark production via flavor-changing neutral currents in W+1 jet events at CDF.
TLDR
A search for the non-standard-model process u(c) + g --> t using pp[over ] collision data collected by the Collider Detector at Fermilab II detector yields no evidence for flavor-changing neutral current top-quark production. Expand
Search for single top quark production at HERA
A search for single top quark production is performed in the full e(+/-)p data sample collected by the H1 experiment at HERA, corresponding to an integrated luminosity of 474 pb(-1). Decays of topExpand
Performance of missing transverse momentum reconstruction in proton-proton collisions at √s = 7 TeV with ATLAS
The measurement of missing transverse momentum in the ATLAS detector, described in this paper, makes use of the full event reconstruction and a calibration based on reconstructed physics objects. TheExpand
Search for single top production in e+e− collisions at s up to 209 GeV
Single top production via the flavour changing neutral current reactions e +e− → t̄c, t̄u is searched for within the 214 pb −1 of data collected by ALEPH at centre-of-mass energies between 204 andExpand
HERWIG 6: an event generator for hadron emission reactions with interfering gluons (including supersymmetric processes)
HERWIG is a general-purpose Monte Carlo event generator, which includes the simulation of hard lepton-lepton, lepton-hadron and hadron-hadron scattering and soft hadron-hadron collisions in oneExpand
...
1
2
3
4
5
...