(O)Mega Split

Abstract

We study two realisations of the Fake Split Supersymmetry Model (FSSM), the simplest model that can easily reproduce the experimental value of the Higgs mass for an arbitrarily high supersymmetry scale, as a consequence of swapping higgsinos for equivalent states, fake higgsinos, with suppressed Yukawa couplings. If the LSP is identified as the main Dark matter component, then a standard thermal history of the Universe implies upper bounds on the supersymmetry scale, which we derive. On the other hand, we show that renormalisation group running of soft masses above the supersymmetry scale barely constrains the model - in stark contrast to Split Supersymmetry - and hence we can have a "Mega Split" spectrum even with all of these assumptions and constraints, which include the requirements of a correct relic abundance, a gluino life-time compatible with Big Bang Nucleosynthesis and absence of signals in present direct detection experiments of inelastic dark matter. In an appendix we describe a related scenario, Fake Split Extended Supersymmetry, which enjoys similar properties.

33 pages, 7 figures, 1 table

References in corpus (21)

• Combined Measurement of the Higgs Boson Mass in $pp$ Collisions at $\sqrt{s}=7$ and 8 TeV with the ATLAS and CMS Experiments
• Detection of An Unidentified Emission Line in the Stacked X-ray spectrum of Galaxy Clusters
• An unidentified line in X-ray spectra of the Andromeda galaxy and Perseus galaxy cluster
• The Well-Tempered Neutralino
• Automatic Calculation of supersymmetric Renormalization Group Equations and Self Energies
• SARAH 3.2: Dirac Gauginos, UFO output, and more
• Checking the dark matter origin of 3.53 keV line with the Milky Way center
• Higgs Mass and Unnatural Supersymmetry
• Non-Detection of X-Ray Emission From Sterile Neutrinos in Stacked Galaxy Spectra
• Higgsino Dark Matter in High-Scale Supersymmetry
• The galactic 511 keV line from electroweak scale WIMPs
• Where do the 3.5 keV photons come from? A morphological study of the Galactic Center and of Perseus
• X-ray Lines from Dark Matter: The Good, The Bad, and The Unlikely
• 3.55 keV photon lines from axion to photon conversion in the Milky Way and M31
• Flavour models with Dirac and fake gluinos
• A 3.55 keV line from $\text{DM}\to a\to \gamma$: predictions for cool-core and non-cool-core clusters
• Dirac Gauginos in Low Scale Supersymmetry Breaking
• A Fake Split Supersymmetry Model for the 126 GeV Higgs
• Displaced Vertices from X-ray Lines
• Observational consistency and future predictions for a 3.5 keV ALP to photon line
• ALP Conversion and the Soft X-ray Excess in the Outskirts of the Coma Cluster

Cited by in corpus (5)

• Supersymmetric and non-supersymmetric models without catastrophic Goldstone bosons
• The discreet charm of higgsino dark matter - a pocket review
• Matching renormalisable couplings: simple schemes and a plot
• Probing the BSM physics with CMB precision cosmology: an application to supersymmetry
• W boson mass in minimal Dirac gaugino scenarios