Article

# Landscape, the Scale of SUSY Breaking, and Inflation

Journal of High Energy Physics (Impact Factor: 5.62). 11/2004; DOI: 10.1088/1126-6708/2004/12/004

Source: arXiv

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**ABSTRACT:**We reevaluate prospects for supersymmetry (SUSY) at the proposed International Linear e+e- Collider (ILC) in light of the first two years of serious data taking at LHC: LHC7 with ∼5 fb-1 of pp collisions at √s=7 TeV and LHC8 with ∼20 fb-1 at √s=8 TeV. Strong new limits from LHC8 SUSY searches, along with the discovery of a Higgs boson with mh≃125 GeV, suggest a paradigm shift from previously popular models to ones with new and compelling signatures. After a review of the current status of supersymmetry, we present a variety of new ILC benchmark models, including natural SUSY, radiatively driven natural SUSY, NUHM2 with low mA, a focus point case from mSUGRA/CMSSM, nonuniversal gaugino mass model, τ˜ coannihilation, Kallosh-Linde/spread SUSY model, mixed gauge-gravity mediation, normal scalar mass hierarchy, and one example with the recently discovered Higgs boson being the heavy CP-even state H. While all these models at present elude the latest LHC8 limits, they do offer intriguing case study possibilities for ILC operating at √s≃0.25–1 TeV. The benchmark points also present a view of the widely diverse SUSY phenomena which might still be expected in the post-LHC8 era at both LHC and ILC.Physical Review D 09/2013; 88(5). · 4.69 Impact Factor - [Show abstract] [Hide abstract]

**ABSTRACT:**An exponentially large extra dimension can be naturally realized by the Casimir energy and the gaugino condensation in 5D supersymmetric theory. The model does not require any hierarchies among the 5D parameters. The key ingredient is an additional modulus other than the radion, which generically exists in 5D supergravity. SUSY is broken at the vacuum, which can be regarded as the Scherk-Schwarz SUSY breaking. We also analyze the mass spectrum and discuss some phenomenological aspects.01/2014; - [Show abstract] [Hide abstract]

**ABSTRACT:**We study the consistency of hybrid inflation and moduli stabilization, using the Kallosh-Linde model as an example for the latter. We find that F-term hybrid inflation is not viable since inflationary trajectories are destabilized by tachyonic modes. On the other hand, D-term hybrid inflation is naturally compatible with moduli stabilization due to the absence of a large superpotential term during the inflationary phase. Our model turns out to be equivalent to superconformal D-term inflation and it therefore successfully accounts for the CMB data in the large-field regime. Supersymmetry breaking can be incorporated via an O'Raifeartaigh model. For GUT-scale inflation one obtains a stringent bound on the gravitino mass. A rough estimate yields m_3/2 \gtrsim 10^5 GeV, contrary to naive expectation.Physics Letters B. 09/2013;

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