The E-6 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 -> hd and D -> 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 (b) over bar channel becomes as efficient as the gamma gamma channel for discovering the Higgs particle if m(D) < 630 GeV. Published by Elsevier B.V.