Higgsino dark matter in high-scale supersymmetry

2014/10/31 by Natsumi Nagata, Satoshi Shirai
Physics and Astronomy · #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark matter #Higgsino #Minimal Supersymmetric Standard Model #Particle physics #Particle physics theoretical and experimental studies #Physics #Supersymmetry #hep-ph

paper · pdf · doi:10.1007/jhep01(2015)029

published as JHEP 1501 (2015) 029 · 28 pages, 12 figures. Version accepted for publication in JHEP

openalex publication_date 2015/01/01 · arxiv created 2015/01/08 · arxiv updated 2015/02/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We study a supersymmetric (SUSY) Standard Model in which a Higgsino is light enough to be dark matter, while the other SUSY particles are much heavier than the weak scale. We carefully treat the effects of heavy SUSY particles to the Higgsino nature, especially taking into account the renormalization effects due to the large hierarchy between the Higgsino and the SUSY breaking scales. Inelastic scattering of the Higgsino dark matter with a nucleus is studied, and the constraints on the scattering by the direct detection experiments are discussed. This gives an upper limit on the new physics scale. Bounds on the dark matter-nucleon elastic scattering, the electric dipole moments, and direct production of Higgsinos, on the other hand, give a lower limit. We show the current status on the limits and discuss the future prospects.

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