Splitting split supersymmetry

2005/01/31 by Kingman Cheung, Cheng-Wei Chiang · 1 citation
Physics and Astronomy · #Annihilation #Chargino #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark matter #Higgs boson #Higgsino #Lightest Supersymmetric Particle #Minimal Supersymmetric Standard Model #Neutralino #Nuclear physics #Pair production #Particle physics #Particle physics theoretical and experimental studies #Physics #Superpartner #Supersymmetry #hep-ph

paper · pdf · doi:10.1103/physrevd.71.095003

published as Phys.Rev.D71:095003,2005 · 18 pages and 4 plots; references added, to be submitted to Phys. Rev. D

arxiv created 2005/02/03 · openalex publication_date 2005/05/05 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

In split supersymmetry, the supersymmetric scalar particles are all very heavy, at least at the order of 10⁹ GeV, but the gauginos, Higgsinos, and one of the neutral Higgs bosons remain below a TeV. Here we further split the split supersymmetry by taking the Higgsino mass parameter \ensuremathμ to be very large. In this case, the \ensuremathμ problem is avoided and we keep the wino as a dark matter candidate. A crude gauge-coupling unification is still preserved. Dark matter signals and collider phenomenology are discussed in this \ensuremathμ-split SUSY scenario. The most interesting dark matter signal is the annihilation into monochromatic photons. In colliders, chargino-pair and the associated chargino-neutralino production cross sections have a certain ratio due to gauge couplings.

Citations

• Dark matter in the finely tuned minimal supersymmetric standard model
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Cited by

• Towards large volume big divisor D3/D7 “μ-split supersymmetry” and Ricci-flat Swiss-cheese metrics, and dimension-six neutrino mass operators