Interactions of Dirac Dark Matter Particles in the E6 Composite Higgs Model

Abstract

In the \({{E}_{6}}\) composite Higgs model (\({{E}_{6}}\)CHM) the candidate for asymmetric dark matter (DM) is a Dirac composite fermion \(\chi \), possessing a baryon number that ensures its stability. It is shown that in the \({{E}_{6}}\) CHM there exist parameter regions not excluded by experimental constraints on the cross section for \(\chi \) interactions with nucleons, as well as regions in which efficient annihilation of the symmetric component of \(\chi \) is achieved.