Please use this identifier to cite or link to this item:
https://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: | The 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. |
DOI: | 10.1007/JHEP10(2017)129 |
Published version: | http://dx.doi.org/10.1007/jhep10(2017)129 |
Appears in Collections: | Aurora harvest 8 Physics publications |
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hdl_115246.pdf | Published version | 981.62 kB | Adobe PDF | View/Open |
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