Higgs Descendants

Abstract

We define a Higgs descendant $\chi$ 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 $\chi$ to the Higgs boson is fixed by the mass and spin of $\chi$, 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 $\chi$ is kinematically allowed, then this branching ratio is largely determined. Depending on the stability of $\chi$, Higgs decays may result in a variety of possible visible or invisible final states. Alternatively, loops of $\chi$ may affect Higgs boson production or its decays to standard model particles. If $\chi$ is stable dark matter, then the mandatory coupling between $\chi$ and the Higgs boson gives a lower bound on the direct detection cross section as a function of the $\chi$ 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.

9 pages, 7 figures; version to appear in Phys. Rev. D; v3 typos corrected

References in corpus (15)

• Gauge Singlet Scalars as Cold Dark Matter
• Non-Abelian Dark Sectors and Their Collider Signatures
• Kinetic Mixing as the Origin of Light Dark Scales
• Possible Signals of Wino LSP at the Large Hadron Collider
• Search for the Higgs portal to a singlet fermionic dark matter at the LHC
• Multi-Scalar-Singlet Extension of the Standard Model - the Case for Dark Matter and an Invisible Higgs Boson
• Search for heavy bottom-like quarks in 4.9 inverse femtobarns of pp collisions at sqrt(s) = 7 TeV
• Evasive Higgs Maneuvers at the LHC
• Higgs decays to dark matter: beyond the minimal model
• The dark side of the Higgs boson
• Dark Matter in Classically Scale-Invariant Two Singlets Standard Model
• Higgs Underproduction at the LHC
• Hints for a non-standard Higgs boson from the LHC
• Unconstraining the Unhiggs
• Singlet Portal to the Hidden Sector

Cited by in corpus (7)

• Naturalness and the Weak Gravity Conjecture
• Constrained Exceptional Supersymmetric Standard Model with a Higgs Near 125 GeV
• A New Direction in Dark-Matter Complementarity: Dark-Matter Decay as a Complementary Probe of Multi-Component Dark Sectors
• Non-Decoupling New Particles
• Effects from New Colored States and the Higgs Portal on Gluon Fusion and Higgs Decays
• Exploring Fermionic Dark Matter via Higgs Boson Precision Measurements at the Circular Electron Positron Collider
• Constraining the Unhiggs with LHC data