Search for ttH production in events where H decays to photons at 8 TeV collisions

Collaboration
2013
15 pages
Report number:
  • CMS-PAS-HIG-13-015
Experiments:

Citations per year

2012201520182021202205101520
Abstract:
We present the results of the search for the associated production of the Higgs boson with a ttˉt \bar{t} pair, using for the first time the events where the Higgs boson decays to two photons. To maximize acceptance and sensitivity to such a small signal, we device two different sets of event selection criteria, optimized for leptonic and hadronic ttˉ\mathrm{t \bar t} decays. We analyze 19.6\,fb1^{-1} of 8\,TeV pp\mathrm{pp} collisions and found no significant excess over the background-only predictions. We thus proceed to set an observed (expected) 95\% confidence level upper limit on the ttˉH\mathrm{t \bar t H} production cross section times BR(Hγγ)BR(H \to \gamma \gamma) of 5.4 (5.3) times the standard model value, corresponding to 1.6~fb, for a Higgs boson of mH=125m_{H} = 125\,GeV.
Note:
  • Preliminary results
  • Data
  • top: pair production
  • Higgs particle: radiative decay
  • Higgs particle: associated production
  • data analysis method
  • final state: two-photon
  • p p: interaction
  • channel cross section: branching ratio: upper limit
  • Higgs particle: mass
  • experimental results