Please use this identifier to cite or link to this item: http://buratest.brunel.ac.uk/handle/2438/14711
Title: 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
Authors: Sirunyan, AM
Tumasyan, A
Adam, W
Asilar, E
Bergauer, T
Brandstetter, J
Brondolin, E
Dragicevic, M
Erö, J
Flechl, M
Friedl, M
Frühwirth, R
Ghete, VM
Hartl, C
Hörmann, N
Hrubec, J
Jeitler, M
König, A
Krätschmer, I
Liko, D
Matsushita, T
Mikulec, I
Rabady, D
Rad, N
Rahbaran, B
Rohringer, H
Schieck, J
Strauss, J
Waltenberger, W
Wulz, CE
Chekhovsky, V
Dvornikov, O
Dydyshka, Y
Emeliantchik, I
Litomin, A
Makarenko, V
Mossolov, V
Stefanovitch, R
Suarez Gonzalez, J
Zykunov, V
Shumeiko, N
Alderweireldt, S
De Wolf, EA
Janssen, X
Lauwers, J
Van De Klundert, M
Van Haevermaet, H
Van Mechelen, P
Van Remortel, N
Van Spilbeeck, A
Abu Zeid, S
Blekman, F
D Hondt, J
Daci, N
De Bruyn, I
Deroover, K
Lowette, S
Moortgat, S
Moreels, L
Olbrechts, A
Python, Q
Skovpen, K
Tavernier, S
Van Doninck, W
Van Mulders, P
Van Parijs, I
Brun, H
Clerbaux, B
De Lentdecker, G
Delannoy, H
Fasanella, G
Favart, L
Goldouzian, R
Grebenyuk, A
Karapostoli, G
Lenzi, T
Léonard, A
Luetic, J
Maerschalk, T
Marinov, A
Randle-conde, A
Seva, T
Vander Velde, C
Vanlaer, P
Vannerom, D
Yonamine, R
Zenoni, F
Zhang, F
Cimmino, A
Cornelis, T
Dobur, D
Fagot, A
Gul, M
Khvastunov, I
Poyraz, D
Keywords: Beyond Standard Model;Hadron-Hadron scattering (experiments);Top physics
Issue Date: 2017
Citation: Journal of High Energy Physics, 2017, 2017 (4)
Abstract: © 2017, The Author(s).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.[Figure not available: see fulltext.].
URI: http://bura.brunel.ac.uk/handle/2438/14711
DOI: http://dx.doi.org/10.1007/JHEP04(2017)136
ISSN: 1126-6708
1029-8479
Appears in Collections:Dept of Mechanical Aerospace and Civil Engineering Research Papers

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