Search for a massive resonance decaying into a Higgs boson and a W or Z boson in hadronic final states in proton-proton collisions at sqrt(s) = 8 TeV

Collaboration
2015
22 pages
Report number:
  • CMS-PAS-EXO-14-009
Experiments:

Citations per year

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Abstract:
A search for a massive resonance decaying into a standard model Higgs boson (H) and a W or Z boson is reported. The analysis is performed on a data sample corresponding to an integrated luminosity of 19.7~fb1^{-1}, collected in proton-proton collisions at a centre-of-mass energy of 8~TeV with the CMS detector at the LHC. Signal events in which the decay products of Higgs, W or Z bosons at high Lorentz boost are contained within a single reconstructed jet are identified using jet substructure techniques, including the tagging of b hadrons. This is the first search for heavy resonances decaying into HW or HZ resulting in an all-jets final state, as well as the first application of jet substructure techniques to identify HWW4q{\rm H\to WW^*\to 4q} decays at high Lorentz boost. No significant signal is observed and limits are set at the 95\% confidence level on the production cross section of W' and Z' in a model with mass-degenerate charged and neutral spin-1 resonances. Resonance masses are excluded for W' in [1.0, 1.6] TeV, for Z' in [1.0, 1.1], [1.3,1.5] TeV, and for mass-degenerate W' and Z' in [1.0, 1.7] TeV ranges.
Note:
  • Preliminary results
  • Data
  • p p: colliding beams
  • resonance: massive
  • p p: scattering
  • resonance: heavy
  • resonance: mass
  • final state: hadronic
  • Higgs particle: hadroproduction
  • vector boson: associated production
  • vector boson: hadronic decay