Publication: Search for a heavy resonance decaying to a top quark and a vector-like top quark in the lepton + jets final state in pp collisions at √ s=13TeV
Дата
2019
Авторы
Sirunyan, A. M.
Tumasyan, A.
Adam, W.
Ambrogi, F.
Chadeeva, M.
Parygin, P.
Philippov, D.
Popova, E.
Polikarpov, S.
Rusinov, V.
Journal Title
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Volume Title
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Аннотация
© 2019, CERN for the benefit of the CMS Collaboration. A search is presented for a heavy spin-1 resonance Z ′ decaying to a top quark and a vector-like top quark partner T in the lepton + jets final state. The search is performed using a data set of p p collisions at a centre-of-mass energy of 13TeV corresponding to an integrated luminosity of 35.9fb-1 as recorded by the CMS experiment at the CERN LHC in the year 2016. The analysis is optimised for final states arising from the T decay modes to a top quark and a Higgs or Z boson (T → H t , Z t). The event selection makes use of resolved and merged top quark decay products, as well as decays of boosted Higgs bosons and Z and W bosons using jet substructure techniques. No significant deviation from the standard model background expectation is observed. Exclusion limits on the product of the cross section and branching fraction for Z ′ → t T , T → H t , Z t , W b are presented for various combinations of the Z ′ resonance mass and the vector-like T quark mass. These results represent the most stringent limits to date for the decay mode Z ′ → t T → t H t. In a benchmark model with extra dimensions, invoking a heavy spin-1 resonance G ∗ , masses of the G ∗ between 1.5 and 2.3TeV and between 2.0 and 2.4TeV are excluded for T masses of 1.2 and 1.5TeV, respectively.
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Цитирование
Search for a heavy resonance decaying to a top quark and a vector-like top quark in the lepton + jets final state in pp collisions at √ s=13TeV / Sirunyan, A.M. [et al.] // European Physical Journal C. - 2019. - 79. - № 3. - 10.1140/epjc/s10052-019-6688-5
URI
https://www.doi.org/10.1140/epjc/s10052-019-6688-5
https://www.scopus.com/record/display.uri?eid=2-s2.0-85063199426&origin=resultslist
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https://openrepository.mephi.ru/handle/123456789/16693
https://www.scopus.com/record/display.uri?eid=2-s2.0-85063199426&origin=resultslist
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000460674700002
https://openrepository.mephi.ru/handle/123456789/16693