Direct mediation of metastable supersymmetry breaking

We give a general formulation of semi-direct gauge mediation of supersymmetry breaking where the messengers interact with the hidden sector only through a weakly gauged group. Using this general formulation, we provide an explicit proof that the MSSM gaugino masses are vanishing to leading order in the gauge couplings. On the other hand, the MSSM sfermion masses have, generically, a non-vanishing leading contribution. We discuss how such a mechanism can successfully be combined with other mediation schemes which give tachyonic sfermions, such as sequestered anomaly mediation and some direct gauge mediation models.

Section: Sfermion Massesmentioning

confidence: 99%

“…Though models which cure some of these problems exist (possibly based on metastable hidden sectors, see e.g. [8]), it would be desirable to single out general properties of models which are phenomenologically viable.…”

Section: Introductionmentioning

confidence: 99%

Patterns of soft masses from general semi-direct gauge mediation

Argurio

Bertolini

Ferretti

et al. 2010

“…In presence of the meson mass terms (3.4), in addition to the ISS vacuum (2.6), other non-SUSY vacua can appear [21]. They can be dangerous if less energetic than the ISS vacuum, since the latter can decay through tunneling too quickly to them.…”

Section: Vacuum Decaymentioning

confidence: 99%

“…Supersymmetric vacua 9 are expected when the mesons get a large VEV, in analogy with [15,21]. The scalar potential has a local maximum at the origin in field space, with energy V M ax = 5µ 4 , while at the local minimum V M in = µ 4 .…”

Section: Vacuum Decaymentioning

confidence: 99%

UV completions of composite Higgs models with partial compositeness

Caracciolo

Parolini

Serone

2013

We construct UV completions of bottom-up models with a pseudo Nambu-Goldstone Boson (NGB) composite Higgs and partial compositeness, admitting a weakly coupled description of the composite sector. This is identified as the low energy description of an SO(N ) supersymmetric gauge theory with matter fields in the fundamental of the group. The Higgs is a NGB associated to an SO(5)/SO(4) coset of a global symmetry group and is identified with certain components of matter fields in a Seiberg dual description of the theory. The Standard Model (SM) gauge fields are obtained by gauging a subgroup of the global group. The mass mixing between elementary SM and composite fermion fields advocated in partial compositeness arise from the flow in the IR of certain trilinear Yukawa couplings defined in the UV theory. We explicitly construct two models of this kind. Most qualitative properties of the bottom-up constructions are derived. The masses of gauge and fermion resonances in the composite sector are governed by different couplings and can naturally be separated. Accommodating all SM fermion masses within the partial compositeness paradigm remains the main open problem, since the SM gauge couplings develop Landau poles at unacceptably low energies.

“…[9], many direct gauge mediation models have been constructed based on the ISS supersymmetry breaking models (See Refs. [13,14,15,16,17] for early applications.). 2 There are two common features shared by the direct gauge mediation models based on the ISS supersymmetry breaking models.…”

Section: Introductionmentioning

confidence: 99%

Constraints on direct gauge mediation models with complex representations

Hanaki

Ibe

Ookouchi

et al. 2011

Self Cite

We discuss constraints from cosmology on the models with direct gauge mediation based on the ISS supersymmetry breaking models. It is a generic feature that the ISS models possess a U (1) symmetry which is eventually spontaneously broken, when the models are based on the gauge symmetries with complex representations. We show that the resultant pseudo NambuGoldstone boson causes problems in cosmology, which leads to severe constraints on the models. We also show that most parameter space of the models can be probed by observing gravitational waves emitted from the cosmic string network when the U (1) symmetry is a gauge symmetry.