Extended tree-level gauge mediation

Monaco, Maurizio; Nardecchia, Marco; Romanino, Andrea; Ziegler, Robert

doi:10.1007/jhep10(2011)022

Cited by 9 publications

(7 citation statements)

References 24 publications

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“…An effective scale of supersymmetry breaking significantly below the GUT scale, , is not without theoretical motivation. For example, mirage unification models [ 84 – 94 ] and other scenarios such as [ 95 ] give exactly such boundary conditions for the soft supersymmetry-breaking parameters. Phenomenologically, these sub-GUT models with have been shown to have an appropriate cold dark matter density in a considerably larger parameter space [ 51 ].…”

Section: Introductionmentioning

confidence: 99%

Beyond the CMSSM without an accelerator: proton decay and direct dark matter detection

et al. 2016

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We consider two potential non-accelerator signatures of generalizations of the well-studied constrained minimal supersymmetric standard model (CMSSM). In one generalization, the universality constraints on soft supersymmetry-breaking parameters are applied at some input scale below the grand unification (GUT) scale , a scenario referred to as ‘sub-GUT’. The other generalization we consider is to retain GUT-scale universality for the squark and slepton masses, but to relax universality for the soft supersymmetry-breaking contributions to the masses of the Higgs doublets. As with other CMSSM-like models, the measured Higgs mass requires supersymmetric particle masses near or beyond the TeV scale. Because of these rather heavy sparticle masses, the embedding of these CMSSM-like models in a minimal SU(5) model of grand unification can yield a proton lifetime consistent with current experimental limits, and may be accessible in existing and future proton decay experiments. Another possible signature of these CMSSM-like models is direct detection of supersymmetric dark matter. The direct dark matter scattering rate is typically below the reach of the LUX-ZEPLIN (LZ) experiment if is close to , but it may lie within its reach if GeV. Likewise, generalizing the CMSSM to allow non-universal supersymmetry-breaking contributions to the Higgs offers extensive possibilities for models within reach of the LZ experiment that have long proton lifetimes.

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Section: Introductionmentioning

confidence: 99%

Beyond the CMSSM without an accelerator: proton decay and direct dark matter detection

et al. 2016

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“…Eqs. (A.20)-(A.21) 3 In the notation of [7] this parameter can be identified with the ratio η = Λ 2 S /Λ 2 G . 4 We just mention that TGM offers a new solution for the µ-problem, where the µ is also responsible for triggering the SUSY breaking [2].…”

Section: )mentioning

confidence: 99%

“…In this work we investigate the case where the DM candidate is the gravitino with a mass in a specific range dictated by Tree Level Gauge Mediation (TGM) [1][2][3], a recently proposed mechanism in which the breaking of SUSY is communicated to the soft scalar masses by extra gauge interactions at the tree level.…”

Section: Introductionmentioning

confidence: 99%

Gravitino Dark Matter in Tree Level Gauge Mediation with and without R-parity

Arcadi¹,

Luzio²,

Nardecchia³

2011

J. High Energ. Phys.

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Abstract:We investigate the cosmological aspects of Tree Level Gauge Mediation, a recently proposed mechanism in which the breaking of supersymmetry is communicated to the soft scalar masses by extra gauge interactions at the tree level. Embedding the mechanism in a Grand Unified Theory and requiring the observability of sfermion masses at the Large Hadron Collider, it follows that the Lightest Supersymmetric Particle is a gravitino with a mass of the order of 10 GeV. The analysis in the presence of R-parity shows that a typical Tree Level Gauge Mediation spectrum leads to an overabundance of the Dark Matter relic density and a tension with the constraints from Big Bang Nucleosynthesis. This suggests to relax the exact conservation of the R-parity. The underlying SO(10) Grand Unified Theory together with the bounds from proton decay provide a rationale for considering only bilinear R-parity violating operators. We finally analyze the cosmological implications of this setup by identifying the phenomenologically viable regions of the parameter space.

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“…3 Refs. [33,34] also used a U (1) D term to mediate SUSY breaking and negative charges to all vectorlike messengers. Their vectorlike masses overcome their negative soft masses so that no scalars are tachyonic.…”

Section: Introductionmentioning

confidence: 99%

Cosmologically viable low-energy supersymmetry breaking

Hook

McGehee²,

Murayama

2018

Phys. Rev. D

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A recent cosmological bound on the gravitino mass, m 3/2 < 4.7 eV, together with LHC results on the Higgs mass and direct searches, excludes minimal gauge mediation with high reheating temperatures. We discuss a minimal, vector-mediated model which incorporates the seesaw mechanism for neutrino masses, allows for thermal leptogenesis, ameliorates the µ problem, and achieves the observed Higgs mass and a gravitino as light as 1-2 eV.

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Extended tree-level gauge mediation

Cited by 9 publications

References 24 publications

Beyond the CMSSM without an accelerator: proton decay and direct dark matter detection

Beyond the CMSSM without an accelerator: proton decay and direct dark matter detection

Gravitino Dark Matter in Tree Level Gauge Mediation with and without R-parity

Cosmologically viable low-energy supersymmetry breaking

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