Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/115246
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Type: Journal article
Title: Search for top quark decays t → qH, with H → γγ, in √s=13 TeV pp collisions using the ATLAS detector
Other Titles: Search for top quark decays t -> qH, with H -> gamma gamma, in root s=13 TeV pp collisions using the ATLAS detector
Author: Aaboud, M.
Aad, G.
Abbott, B.
Abdinov, O.
Abeloos, B.
Abidi, S.
AbouZeid, O.
Abraham, N.
Abramowicz, H.
Abreu, H.
Abreu, R.
Abulaiti, Y.
Acharya, B.
Adachi, S.
Adamczyk, L.
Adelman, J.
Adersberger, M.
Adye, T.
Affolder, A.
Afik, Y.
et al.
Citation: Journal of High Energy Physics, 2017; 2017(10):129-0-129-42
Publisher: Springer-Verlag
Issue Date: 2017
ISSN: 1126-6708
1029-8479
Statement of
Responsibility: 
The ATLAS collaboration, M. Aaboud … D. Duvnjak … P. Jackson ... L. Lee ... A. Petridis ... M.J. White ... et al.
Abstract: This article presents a search for flavour-changing neutral currents in the decay of a top quark into an up-type (q = c, u) quark and a Higgs boson, where the Higgs boson decays into two photons. The proton-proton collision data set analysed amounts to 36.1 fb⁻¹ at s√=13 TeV collected by the ATLAS experiment at the LHC. Top quark pair events are searched for, where one top quark decays into qH and the other decays into bW . Both the hadronic and leptonic decay modes of the W boson are used. No significant excess is observed and an upper limit is set on the t → cH branching ratio of 2.2 × 10⁻³ at the 95% confidence level, while the expected limit in the absence of signal is 1.6 × 10⁻³ . The corresponding limit on the tcH coupling is 0.090 at the 95% confidence level. The observed upper limit on the t → uH branching ratio is 2.4 × 10⁻³.
Keywords: Flavour Changing Neutral Currents; Hadron-Hadron scattering (experiments); Higgs physics; Top physics
Description: Published: October 19, 2017
Rights: Copyright: © The Author(s) 2017. Open Access. 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: 0030077409
DOI: 10.1007/JHEP10(2017)129
Appears in Collections:Physics publications

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