Search for vector-like top quark partners produced in association with Higgs bosons in the diphoton final state

Collaboration
2014
17 pages
Report number:
  • CMS-PAS-B2G-14-003
Experiments:

Citations per year

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Abstract:
We present a search for a heavy vector-like quark with charge 2/3 (top partner, T). We search for events where the top partner is produced in pairs and where at least one of them decays into a top quark and a Higgs boson. We focus on the decays of the Higgs boson to photons to allow for full mass reconstruction. We select events with two photons and large hadronic activity, and we search for a resonance in the diphoton mass distribution. The observed data are in agreement with the standard model prediction. We proceed to set observed (expected) 95\% confidence level upper limits on the production cross section of strong TTˉ\mathrm{T\bar{T}} production, excluding the existence of top quark partners with mass up to 540 (607)\,GeV using 19.7\,fb1^{-1} of integrated luminosity.
Note:
  • Preliminary results
  • Data
  • mass spectrum: two-photon
  • Higgs particle: radiative decay
  • p p: interaction
  • top': pair production
  • top': vector particle
  • top': decay
  • channel cross section: upper limit
  • top': mass: lower limit
  • experimental results