Superpartner spectrum of minimal gaugino-gauge mediation

Abstract

We evaluate the sparticle mass spectrum in the minimal four-dimensional construction that interpolates between gaugino and ordinary gauge mediation at the weak scale. We find that even in the hybrid case -when the messenger scale is comparable to the mass of the additional gauge particles -both the right-handed as well as the left-handed sleptons are lighter than the bino in the low-scale mediation regime. This implies a chain of lepton production and, consequently, striking signatures that may be probed at the LHC already in the near future.

Holography for general gauge mediation

“…So it seems that one is unable to get a fully universal set of relations between couplings that one may find in similar constructions that start with the magnetic description of SQCD [81,82] and may be a prediction to descriminate between the two cases. It would be nice if there was a natural way to integrate out some of the bulk degrees of freedom and arrive at a quiver-like model similar to those explored in [75,83,84] somewhat in the direction of [15].…”

General resonance mediation

“…For the case of pions the above result for a 1 → 2 amplitude was obtained from using certain current algebra techniques on a 2 → 2 amplitude and it would be desirable to derive this type of result more directly for this supersymmetric case. However for µ ∼ M this model will have similar features to that of the two site quiver model (see for instance [43]) with only one resonance. For a minimal messenger sector Eqn.…”

“…after Wick rotation. These models have been explored and generalised [10,12,[39][40][41][42][43]. Typically one finds three regimes: a) m v ≪ M where there are additional contributions to sfermions masses at three loop [10] and the model is "Gaugino Mediated".…”

“…The standard model gaugino λ SM would however remain massless! Instead if the vector mesons are interpreted as mass eigenstatesṼ i and the currents couple to interaction eigenstates V j with i = 0, 1, as in the quiver models [10,12,[39][40][41][42][43], the currents couplings are…”

Easy Dirac gauginos

“…This provides a generic phenomenological framework for implementing F -term supersymmetry breaking with Dirac gaugino masses. In deconstructed gaugino mediation [34][35][36][37][38][39][40][41][42], the visible gauge groups couple via link-fields to a hidden gauge group which in turn couples to messengers and so to the supersymmetry breaking sector. The link-fields develop a vacuum expectation value µ ℓ and higgs the visible and hidden groups to the MSSM gauge groups at a scale below the messenger scale M .…”