Search for ttbar resonances in dilepton+jets final states in pp collisions at 8 TeV
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Abstract:
We present a model-independent search for heavy resonances decaying to
pairs using 19.7~ of data recorded by the CMS
detector in collisions at ~TeV. The search is based
on events containing two leptons (electron or muon) , at least two jets, and large missing transverse energy.
No deviation is observed over the expected rate from standard model processes. We set 95\% confidence-level upper limits on the production
cross section for heavy resonances decaying to top quark-antiquark
pairs in the mass
range of 1~TeV -- 3~TeV. Lower mass limits are set for the decays of narrow and wide
width leptophobic topcolor Z' bosons, as well as for Kaluza-Klein gluon excitations
as predicted in theories beyond the standard model.Note:
- Preliminary results
- Data
- p p: scattering
- resonance: heavy
- resonance: search for
- top: pair production
- dilepton: final state
- jet: final state
- transverse energy: missing-energy
- cross section: branching ratio: upper limit
- Z': mass
References(64)
Figures(15)
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