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Type: Journal article
Title: Search for top quark decays t → qH with H → γγ using the ATLAS detector
Other Titles: Search for top quark decays t -> qH with H -> gamma gamma using the ATLAS detector
Author: ATLAS Collaboration
Aad, G.
Citation: Journal of High Energy Physics, 2014; 1406(6):1-39
Publisher: Springer
Issue Date: 2014
ISSN: 1126-6708
Statement of
G. Aad … P. Jackson … L. Lee … A. Petridis … N. Soni ... M. White ... et al. (The ATLAS Collaboration)
Abstract: A search is performed for flavour-changing neutral currents in the decay of a top quark to an up-type (c, u) quark and a Higgs boson, where the Higgs boson decays to two photons. The proton-proton collision data set used corresponds to 4.7 fb -1 at root s = 7TeV and 20.3 fb -1 at root s = 8TeV collected by the ATLAS experiment at the LHC. Top quark pair events are searched for in which one top quark decays to qH and the other decays to bW. Both the hadronic and the leptonic decay modes of the W boson are used. No significant signal is observed and an upper limit is set on the t -> qH branching ratio of 0.79% at the 95% confidence level. The corresponding limit on the tqH coupling combination q lambda2t cH + lambda2t uH is 0.17.
Keywords: Hadron-Hadron scattering
Rights: © The Author(s) 2014. Open Access, Copyright CERN, for the benefit of the ATLAS Collaboration. Article funded by SCOAP3. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.
RMID: 0030013045
DOI: 10.1007/JHEP06(2014)008
Appears in Collections:Physics publications

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