The E6 inspired isosinglet quark and the Higgs boson

Abstract

We consider the experimental implications of the down type isosinglet quark, $D$, predicted by the $E_6$, group to Higgs boson searches at the LHC. The pair production of $D$ quarks at the LHC and their subsequent decays $D\to hd$ and $D\to Wu$ has been analyzed. For a light Higgs boson of mass O(120 GeV), an analysis based on fast simulation of the ATLAS detector response shows that, the $b\bar{b}$ channel becomes as efficient as the $\gamma \gamma$ channel for discovering the Higgs particle if $m_D<630$ GeV.

arXiv comment9 pages

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• Vector-like Singlet Quarks: a Roadmap
• Search for pair production of a new quark that decays to a Z boson and a bottom quark with the ATLAS detector
• Flavor-changing interactions with singlet quarks and their implications for the LHC
• Down Type Isosinglet Quarks in ATLAS
• Chiral heavy fermions in a two Higgs doublet model: 750 GeV resonance or not
• Down type iso-singlet quarks at the HL-LHC and FCC-hh
• A search for the first generation charged vector-like leptons at future colliders
• Effects of the FCNC couplings in production of new heavy quarks within Z' models at the LHC