Search for top quark decays t → qH with H → γγ using the ATLAS detector
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[superscript −1] at √s = 7 TeV and 20.3 fb[superscript −1]...
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| Format: | Article |
| Language: | en_US |
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Springer-Verlag
2014
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| Online Access: | http://hdl.handle.net/1721.1/89426 https://orcid.org/0000-0002-7586-7253 |
| _version_ | 1826195093927755776 |
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| author | Taylor, Frank E. |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Taylor, Frank E. |
| author_sort | Taylor, Frank E. |
| collection | MIT |
| description | 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[superscript −1] at √s = 7 TeV and 20.3 fb[superscript −1] at √s = 8 TeV 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 √λ[2 over tcH] + λ[2 over tuH] is 0.17. |
| first_indexed | 2024-09-23T10:07:15Z |
| format | Article |
| id | mit-1721.1/89426 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T10:07:15Z |
| publishDate | 2014 |
| publisher | Springer-Verlag |
| record_format | dspace |
| spelling | mit-1721.1/894262022-09-26T15:49:51Z Search for top quark decays t → qH with H → γγ using the ATLAS detector Taylor, Frank E. Massachusetts Institute of Technology. Department of Physics Taylor, Frank E. 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[superscript −1] at √s = 7 TeV and 20.3 fb[superscript −1] at √s = 8 TeV 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 √λ[2 over tcH] + λ[2 over tuH] is 0.17. United States. Dept. of Energy National Science Foundation (U.S.) Brookhaven National Laboratory 2014-09-11T13:08:35Z 2014-09-11T13:08:35Z 2014-06 2014-03 Article http://purl.org/eprint/type/JournalArticle 1029-8479 1126-6708 http://hdl.handle.net/1721.1/89426 Aad, G., B. Abbott, J. Abdallah, S. Abdel Khalek, O. Abdinov, R. Aben, B. Abi, et al. “Search for Top Quark Decays t → qH with H → γγ Using the ATLAS Detector.” J. High Energ. Phys. 2014, no. 6 (June 2014). © CERN, for the benefit of the ATLAS Collaboration https://orcid.org/0000-0002-7586-7253 en_US http://dx.doi.org/10.1007/jhep06(2014)008 Journal of High Energy Physics Creative Commons Attribution http://creativecommons.org/licenses/by/4.0/ application/pdf Springer-Verlag Springer-Verlag |
| spellingShingle | Taylor, Frank E. Search for top quark decays t → qH with H → γγ using the ATLAS detector |
| title | Search for top quark decays t → qH with H → γγ using the ATLAS detector |
| title_full | Search for top quark decays t → qH with H → γγ using the ATLAS detector |
| title_fullStr | Search for top quark decays t → qH with H → γγ using the ATLAS detector |
| title_full_unstemmed | Search for top quark decays t → qH with H → γγ using the ATLAS detector |
| title_short | Search for top quark decays t → qH with H → γγ using the ATLAS detector |
| title_sort | search for top quark decays t qh with h γγ using the atlas detector |
| url | http://hdl.handle.net/1721.1/89426 https://orcid.org/0000-0002-7586-7253 |
| work_keys_str_mv | AT taylorfranke searchfortopquarkdecaystqhwithhngusingtheatlasdetector |