Search for ttˉ\mathrm{t\bar{t}} resonances in boosted semileptonic final states in pp collisions at s=13 TeV\sqrt{s}=13~\mathrm{TeV}

Collaboration
2016
22 pages
Report number:
  • CMS-PAS-B2G-15-002
Experiments:

Citations per year

2016201720182019202005101520
Abstract:
We present a search for the production of heavy resonances decaying into top-antitop quark pairs. The analysis is performed in the lepton+jets channel using 2.6 fb12.6~\mathrm{fb}^{-1} of data collected in proton-proton collisions at s=13 TeV{\sqrt{s}=13}~\mathrm{TeV} with the CMS detector. The selection is optimized for heavy resonance masses, where the top quarks have large Lorentz-boosts. This results in non-isolated leptons from the Wν\mathrm{W} \to \ell \nu decay and two or more quarks reconstructed in a single jet from the tbWbqq\mathrm{t} \to \mathrm{bW} \to \mathrm{bqq'} decay. These jets are identified using top-tagging algorithms. No evidence for resonant ttˉ\mathrm{t\bar{t}} production is found and upper limits on the production cross section of heavy resonances are set.
Note:
  • Preliminary results
  • Data
  • p p: colliding beams
  • resonance: heavy
  • top: pair production
  • p p: scattering
  • resonance: mass
  • top: boosted particle
  • CERN LHC Coll
  • CMS
  • top: particle identification