2015/01/31 by Timothy Cohen, John Kearney, Markus A. Luty +1 · 33 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Higgs boson #Higgs field #Higgs mechanism #Higgs sector #Higgsino #Minimal Supersymmetric Standard Model #Particle physics #Particle physics theoretical and experimental studies #Physics #Supersymmetry #Supersymmetry breaking #hep-ph
paper · pdf · doi:10.1103/physrevd.91.075004
published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 91(7) (American Physical Society) · 22 pages, 2 figures; v2: references added
arxiv created 2015/02/18 · openalex publication_date 2015/04/08 · arxiv updated 2015/04/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We present a mechanism that allows a large Higgsino mass without large fine-tuning. The Higgs is a pseudo-Nambu-Goldstone boson (PNGB) of the global symmetry breaking pattern SO(5)\ensuremath→SO(4). Because of the PNGB nature of the light Higgs, the SO(5) invariant Higgsino mass does not directly contribute to the Higgs mass. Large couplings in the Higgs sector that spontaneously breaks SO(5) minimize the tuning, and are also motivated by the requirements of generating a sufficiently large Higgs quartic coupling and of maintaining a natural approximate global SO(5) symmetry. When these conditions are imposed, theories of this type predict heavy Higgsinos. This construction differs from composite Higgs models in that no new particles are introduced to form complete SO(5) multiplets involving the top quark---the stop is the only top partner. Compatibility with Higgs coupling measurements requires cancellations among contributions to the Higgs mass-squared parameter at the 10% level. An important implication of this construction is that the compressed region of stop and sbottom searches can still be natural.