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Resurrecting the minimal renormalizable supersymmetric SU(5) model | | Borut Bajc
; Stéphane Lavignac
; Timon Mede
; | | Date: |
22 Sep 2015 | | Abstract: | It is a well-known fact that the minimal renormalizable supersymmetric SU(5)
model is ruled out assuming superpartner masses of the order of a few TeV.
Giving up this constraint and assuming only SU(5) boundary conditions for the
soft terms, we find that the model is still alive. The viable region of the
parameter space typically features superpartner masses of order $10^2$ to
$10^4$ TeV, with tan beta values between 2 and 5, but lighter spectra with
single states around 10 TeV are also possible. The main constraints come from
proton decay, the Higgs mass, the requirement of the SU(5) spectrum being
reasonably below the Planck scale, and the lifetime of the universe. A generic
feature of the model is metastability of the electroweak vacuum. In the absence
of a suitable dark matter particle in the neutralino sector, a light (order GeV
or smaller) gravitino is a natural candidate. | | Source: | arXiv, 1509.6680 | | Services: | Forum | Review | PDF | Favorites | |
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