2011/12/31 by Clifford Cheung, Yasunori Nomura · 7 citations
Physics and Astronomy · #Biology #Boson #Context (archaeology) #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Electroweak interaction #Electroweak scale #Higgs boson #Higgs field #Higgs mechanism #Particle physics #Particle physics theoretical and experimental studies #Physics #Physics beyond the Standard Model #Standard Model (mathematical formulation) #hep-ph
paper · pdf · doi:10.1103/physrevd.86.015004
published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 86(1) (American Physical Society) · 9 pages, 7 figures; version to appear in Phys. Rev. D; v3 typos corrected
arxiv created 2012/07/03 · openalex publication_date 2012/07/03 · arxiv updated 2013/05/29 · openalex created_date 2020/07/02 · openalex updated_date 2026/08/05
We define a Higgs descendant \ensuremathχ to be a particle beyond the standard model whose mass arises predominantly from the vacuum expectation value of the Higgs boson. Higgs descendants arise naturally from new physics whose intrinsic mass scale is unrelated to the electroweak scale. The coupling of \ensuremathχ to the Higgs boson is fixed by the mass and spin of \ensuremathχ, yielding a highly predictive setup in which there may be substantial modifications to the properties of the Higgs boson. For example, if the decay of the Higgs boson to \ensuremathχ is kinematically allowed, then this branching ratio is largely determined. Depending on the stability of \ensuremathχ, Higgs decays may result in a variety of possible visible or invisible final states. Alternatively, loops of \ensuremathχ may affect Higgs boson production or its decays to standard model particles. If \ensuremathχ is stable dark matter, then the mandatory coupling between \ensuremathχ and the Higgs boson gives a lower bound on the direct detection cross section as a function of the \ensuremathχ mass. We also present a number of explicit models which are examples of Higgs descendants. Finally, we comment on Higgs descendants in the context of the excesses near 125 GeV recently observed at ATLAS and CMS.