Journal article
Search for electroweak production of a vector-like quark decaying to a top quark and a Higgs boson using boosted topologies in fully hadronic final states
Journal of high energy physics : JHEP, Vol.2017(4), 136
01/01/2017
DOI: 10.1007/JHEP04(2017)136
Abstract
A search is performed for electroweak production of a vector-like top quark partner T of charge 2/3 in association with a standard model top or bottom quark, using 2.3 fb−1 of proton-proton collision data at s=13 TeV collected by the CMS experiment at the CERN LHC. The search targets T quarks decaying to a top quark and a Higgs boson in fully hadronic final states. For a T quark with mass above 1 TeV the daughter top quark and Higgs boson are highly Lorentz-boosted and can each appear as a single hadronic jet. Jet substructure and b tagging techniques are used to identify the top quark and Higgs boson jets, and to suppress the standard model backgrounds. An excess of events is searched for in the T quark candidate mass distribution in the data, which is found to be consistent with the expected backgrounds. Upper limits at 95% confidence level are set on the product of the single T quark production cross sections and the branching fraction ℬ (T → t H) , and these vary between 0.31 and 0.93 pb for T quark masses in the range 1000-1800 GeV. This is the first search for single electroweak production of a vector-like T quark in fully hadronic final states
Details
- Title: Subtitle
- Search for electroweak production of a vector-like quark decaying to a top quark and a Higgs boson using boosted topologies in fully hadronic final states
- Creators
- CMS CollaborationFlorencia CanelliBenjamin Kilminster - University of ZurichThea AarestadLea Caminada - University of ZurichAnnapaoloa CosaRiccardo Del BurgoSilvio Donato - Scuola Normale SuperioreCamilla Galloni - University of ZurichAndreas Hinzmann - University of ZurichTomas Hreus - University of ZurichJennifer Ngadiuba - University of ZurichDeborah Pinna - University of ZurichGiorgia Rauco - University of ZurichPeter Robmann - University of ZurichDaniel Salerno - University of ZurichKorbinian SchweigerClaudia SeitzYuta Takahashi - European Organization for Nuclear ResearchAlberto Zucchetta - University of Zurich
- Contributors
- Y Onel (Contributor) - University of Iowa, Physics and Astronomy
- Resource Type
- Journal article
- Publication Details
- Journal of high energy physics : JHEP, Vol.2017(4), 136
- DOI
- 10.1007/JHEP04(2017)136
- ISSN
- 1126-6708
- eISSN
- 1029-8479
- Publisher
- Springer
- Language
- English
- Date published
- 01/01/2017
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984386724802771
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