Dynamical symmetry breaking, CP violation, and a Higgs-like particle

Abstract

A pseudoscalar associated with dynamical symmetry breaking can mix with a heavier scalar when CP is violated. We study how such a mixed state that is mostly pseudoscalar can resemble the observed 125 GeV particle. The production rate from $gg$ is enhanced by the new heavy quarks and this compensates for the reduced $WW$, $ZZ$ and $\gamma \gamma$ branching ratios. The particle can appear to be a scalar from angular distributions in $ZZ$ decay while its pseudoscalar couplings should become evident in other processes.

10 pages, matches published version

References in corpus (7)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• Study of the mass and spin-parity of the Higgs boson candidate via its decays to Z boson pairs
• The discovery of the fourth family at the LHC: what if?
• Large N flavor beta-functions: a recap
• Higgs CP Properties From Early LHC Data
• New Flavor Interactions at the LHC