Compact Muon Solenoid
LHC, CERN
Visit us: CMS Public Website, CMS Physics ;
Contact us: CMS Publications Committee
| CMS-PAS-B2G-17-015 | ||
| Search for a heavy resonance decaying to a top quark and a vector-like top quark in the lepton+jets final state | ||
| CMS Collaboration | ||
| July 2018 | ||
| Abstract: A search is presented for a heavy spin-1 resonance Z' decaying to a top quark and a vector-like top quark T in the lepton+jets final state. The search is performed using a data set of proton-proton collisions at a centre-of-mass energy of 13 TeV corresponding to an integrated luminosity of 35.9 fb$^{-1}$ 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 a Z boson ($\mathrm{T} \to \mathrm{Ht},\,\mathrm{Zt}$). The event selection makes use of resolved and boosted top quark decays, as well as boosted decays of H bosons and heavy gauge bosons using jet substructure techniques. No signficant deviation from the standard model background expectation is observed. Model-independent exclusion limits on the product of the cross section and branching fraction are presented for various combinations of the Z' resonance mass and the vector-like T quark mass. In a benchmark model with extra dimensions, masses of the Z' resonance less than 2.4 TeV are excluded. These limits represent the most stringent limits to date for the decay mode $\mathrm{Z}^\prime \to \mathrm{tT} \to \mathrm{tHt}$. | ||
|
Links:
CDS record (PDF) ;
inSPIRE record ;
CADI line (restricted) ;
These preliminary results are superseded in this paper, EPJC 79 (2019) 208. The superseded preliminary plots can be found here. |
||
|
|
Compact Muon Solenoid LHC, CERN |
|
|
|
|
|
|