Compact Muon Solenoid
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| CMS-PAS-B2G-24-016 | ||
| Search for pair-produced vector-like top quarks decaying to Lorentz-boosted topquarks and scalar bosons in proton-proton collisions at $ \sqrt{s}= $ 13 TeV | ||
| CMS Collaboration | ||
| 2026-05-18 | ||
| Abstract: The first search for pair-produced vector-like top quarks, T, decaying to a new scalar boson $ \phi $ and a standard model (SM) top quark is presented. The search targets events containing a photon pair originating from the decay of one of the scalar bosons, accompanied by all-hadronic decays of the SM top quark pair. The analysis is optimized for boosted top quark signatures in which the decay products of the top quarks are reconstructed as large-radius jets. The search is based on proton-proton collision data at a center-of-mass energy of $ \sqrt{s}= $ 13 TeV, collected by the CMS experiment at the CERN LHC during 2016, 2017, and 2018, corresponding to an integrated luminosity of 138 fb$ ^{-1} $. The search is performed in the two-dimensional $ (m_{\mathrm{T}}, m_{\phi}) $ plane. No significant deviation from the standard model prediction is observed. Assuming a branching fraction of 100$ % $ for $ \phi \to \gamma\gamma $, upper limits at 95$ % $ confidence level are set on the $ \mathrm{T}\bar{\mathrm{T}} $ production cross section. Vector-like top quark masses below 1.39 TeV are excluded. | ||
| Links: CDS record (PDF) ; CADI line (restricted) ; | ||
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Compact Muon Solenoid LHC, CERN |
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