2009/02/28 by Bohdan Grza̧dkowski, Bohdan Grzadkowski, José Wudka +1 · 51 citations
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #Dark matter #Gauge (firearms) #Gauge boson #Gauge theory #Hierarchy problem #Higgs boson #Mixing (physics) #Neutrino #Neutrino Physics Research #Neutrino oscillation #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Physics beyond the Standard Model #Quantum mechanics #Solar neutrino #Solar neutrino problem #Standard Model (mathematical formulation) #hep-ph
paper · pdf · doi:10.1103/physrevlett.103.091802
published in Physical Review Letters 103(9), 091802 (American Physical Society) · discussion of multi singlet case added
arxiv created 2009/08/20 · openalex publication_date 2009/08/27 · arxiv updated 2010/04/23 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We show that the addition of real scalars (gauge singlets) to the standard model can both ameliorate the little hierarchy problem and provide realistic dark matter candidates. To this end, the coupling of the new scalars to the standard Higgs boson must be relatively strong and their mass should be in the 1-3 TeV range, while the lowest cutoff of the (unspecified) UV completion must be > or ~ 5 TeV, depending on the Higgs boson mass and the number of singlets present. The existence of the singlets also leads to realistic, and surprisingly reach, neutrino physics. The resulting light neutrino mass spectrum and mixing angles are consistent with the constraints from the neutrino oscillations.