Search for neutral color-octet weak-triplet scalar particles in proton-proton collisions at √s = 8 TeV

CMS Collaboration

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Abstract

A search for pair production of neutral color-octet weak-triplet scalar particles (Θ0) is performed in processes where one Θ0 decays to a pair of b quark jets and the other to a Z boson plus a jet, with the Z boson decaying to a pair of electrons or muons. The search is performed with data collected by the CMS experiment at the CERN LHC corresponding to an integrated luminosity of 19.7 fb−1 of proton-proton collisions at √s = 8 TeV. The number of observed events is found to be in agreement with the standard model predictions.The 95% confidence level upper limit on the product of the cross section and branching fraction is obtained as a function of the Θ0 mass. The 95% confidence level lower bounds on the Θ0 mass are found to be 623 and 426 GeV, for two different octo-triplet theoretical scenarios. These are the first direct experimental bounds on particles predicted by the octo-triplet model.
Original languageEnglish
Article number201
Number of pages37
JournalJournal of High Energy Physics
Volume2015
Issue number9
DOIs
Publication statusPublished - 2015
Externally publishedYes

Keywords

  • Exotics
  • Hadron-Hadron Scattering

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