Could a light Higgs boson illuminate the dark sector?

Abstract

The impact a new neutral light particle of spin 0, 1/2, 1, or 3/2 could have on the tiny width of a light Higgs boson is systematically analyzed. To this end, we include all the relevant effective interactions, whether renormalizable or not, and review the possible signatures in the Higgs decay modes with missing energy. This includes the fully invisible Higgs boson decay, as well as modes with SM gauge boson or fermions in the final state. In many cases, simply preventing these modes from being dominant suffices to set tight model-independent constraints on the masses and couplings of the new light states.

21 pages, 7 figures. Minor changes; to appear in Phys. Rev. D

References in corpus (20)

• Secluded U(1) below the weak scale
• New Fixed-Target Experiments to Search for Dark Gauge Forces
• LHC Phenomenology of an Extended Standard Model with a Real Scalar Singlet
• Implications of LHC searches for Higgs--portal dark matter
• "Dark" Z implications for Parity Violation, Rare Meson Decays, and Higgs Physics
• Probing Dark Forces and Light Hidden Sectors at Low-Energy e+e- Colliders
• Vector Higgs-portal dark matter and the invisible Higgs
• Discovering New Light States at Neutrino Experiments
• Higgs searches and singlet scalar dark matter: Combined constraints from XENON 100 and the LHC
• Measuring the Higgs Sector
• Search for the Higgs portal to a singlet fermionic dark matter at the LHC
• FCNC portals to the dark sector
• LHC: Standard Higgs and Hidden Higgs
• Constraints on Light Dark Matter and U bosons, from psi, Upsilon, K+, pi0, eta and eta' decays
• Hints of Standard Model Higgs Boson at the LHC and Light Dark Matter Searches
• Higgs decays to dark matter: beyond the minimal model
• The dark side of the Higgs boson
• Measuring the Invisible Higgs Width at the 7 and 8 TeV LHC
• Magnetic Mixing -- Electric Minicharges from Magnetic Monopoles
• Hints for a non-standard Higgs boson from the LHC

Cited by in corpus (27)

• A facility to Search for Hidden Particles at the CERN SPS: the SHiP physics case
• Higgs After the Discovery: A Status Report
• "Dark" Z implications for Parity Violation, Rare Meson Decays, and Higgs Physics
• Higgs portal, fermionic dark matter, and a Standard Model like Higgs at 125 GeV
• On Stability of the Electroweak Vacuum and the Higgs Portal
• Interpreting LHC Higgs Results from Natural New Physics Perspective
• Is the resonance at 125 GeV the Higgs boson?
• New Production Mechanism for keV Sterile Neutrino Dark Matter by Decays of Frozen-In Scalars
• Simplified Models vs. Effective Field Theory Approaches in Dark Matter Searches
• FCNC portals to the dark sector
• Combined analysis of effective Higgs portal dark matter models
• Searching for dark matter at LHC with Mono-Higgs production
• Sterile Neutrino portal to Dark Matter II: Exact Dark symmetry
• Dark Matter in the minimal Inverse Seesaw mechanism
• Dark matter within the minimal flavour violation ansatz
• Dark photons and resonant monophoton signatures in Higgs boson decays at the LHC
• Higgs portal dark matter in non-thermal cosmologies
• Dark-Photon searches via Higgs-boson production at the LHC
• Complementarity of Galactic radio and collider data in constraining WIMP dark matter models
• Partially (in)visible Higgs decays at the LHC
• Non-linear Higgs portal to Dark Matter
• First order electroweak phase transition triggered by the Higgs portal vector dark matter
• Two-Higgs-Doublet-Portal Dark-Matter Models in Light of Direct Search and LHC Data
• Exploring Spin-3/2 Dark Matter with Effective Higgs Couplings
• Higgs decays to $\gamma$ and invisible particles in the standard model
• Dark sectors and enhanced $h\to \tau \mu$ transitions
• Boosting Invisible Higgs Searches by Tagging a Gluon Jet for Gluon Fusion Process