Natural generalized mirage mediation

Baer, Howard; Barger, V.; Serce, Hasan; Tata, Xerxes

doi:10.1103/physrevd.94.115017

Cited by 71 publications

(103 citation statements)

References 85 publications

(81 reference statements)

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“…A nice review of the status of dark matter SUSY searches in different supersymmetric scenarios with neutralino dark matter can be found in Ref. [13]. In any case, the recent prospects exposed by the LUX [14] and FERMI [15] collaborations showed that the WIMP paradigm should be excluded (or discovered) for dark matter masses below 10 TeV in the present generation of detectors.…”

Section: Introductionmentioning

confidence: 99%

Minimal model of gravitino dark matter

et al. 2017

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Motivated by the absence of signals of new physics in searches for both new particles at the LHC and a weakly interacting massive particle dark matter candidate, we consider a scenario where supersymmetry is broken at a scale above the reheating temperature. The low-energy particle content then only consists of Standard Model states and a gravitino. We investigate the possibility that the latter provides the main component of dark matter through the annihilation of thermalized Standard Model particles. We focus on the case where its production through scattering in the thermal plasma is well approximated by the nonlinear supersymmetric effective Lagrangian of the associated Goldstino and identify the parameter space allowed by the cosmological constraints, allowing the possibility of a large reheating temperature compatible with leptogenesis scenarios and alleviating the so-called "gravitino problem".

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Section: Introductionmentioning

confidence: 99%

Minimal model of gravitino dark matter

et al. 2017

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“…to require relatively large fine-tuning in light of the measured value of the Higgs boson mass [64], led us to suggest a phenomenological generalization of this picture discussed in section 2 [65]. This extension allows us to accommodate the mass patterns suggested by the mini-landscape picture mentioned above, the phenomenology of which is the subject of this paper.…”

Section: Jhep06(2017)101mentioning

confidence: 90%

Superparticle phenomenology from the natural mini-landscape

Baer

Barger

Savoy

et al. 2017

J. High Energ. Phys.

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The methodology of the heterotic mini-landscape attempts to zero in on phenomenologically viable corners of the string landscape where the effective low energy theory is the Minimal Supersymmetric Standard Model with localized grand unification. The gaugino mass pattern is that of mirage-mediation. The magnitudes of various SM Yukawa couplings point to a picture where scalar soft SUSY breaking terms are related to the geography of fields in the compactified dimensions. Higgs fields and third generation scalars extend to the bulk and occur in split multiplets with TeV scale soft masses. First and second generation scalars, localized at orbifold fixed points or tori with enhanced symmetry, occur in complete GUT multiplets and have much larger masses. This picture can be matched onto the parameter space of generalized mirage mediation. Naturalness considerations, the requirement of the observed electroweak symmetry breaking pattern, and LHC bounds on mg together limit the gravitino mass to the m 3/2 ∼ 5-60 TeV range. The mirage unification scale is bounded from below with the limit depending on the ratio of squark to gravitino masses. We show that while natural SUSY in this realization may escape detection even at the high luminosity LHC, the high energy LHC with √ s = 33 TeV could unequivocally confirm or exclude this scenario. It should be possible to detect the expected light higgsinos at the ILC if these are kinematically accessible, and possibly also discriminate the expected compression of gaugino masses in the natural mini-landscape picture from the mass pattern expected in models with gaugino mass unification. The thermal WIMP signal should be accessible via direct detection searches at the multi-ton noble liquid detectors such as XENONnT or LZ.

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“…Phenomenology of the mirage mediation have been studied before the Higgs boson discovery [16][17][18] and after the discovery [19][20][21][22][23]. The mirage mediation in the Next-to-MSSM 2 has been also studied in refs.…”

Section: Jhep11(2017)189mentioning

confidence: 99%

Analysis of the TeV-scale mirage mediation with heavy superparticles

Kawamura¹,

Omura²

2017

J. High Energ. Phys.

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Abstract:We discuss effective models derived from a supersymmetric model whose mediation mechanism of supersymmetry (SUSY) breaking is namely mirage mediation. In this model, light higgsino mass, that is required by the natural realization of the electroweak scale, is achieved by the unification of the soft SUSY breaking parameters at the low scale. Besides, we find that extra Higgs fields are also possibly light in some cases. Then, the effective model is a two Higgs doublet model (2HDM) with higgsinos, and it is distinguishable with namely type-II 2HDM which is widely discussed. In this paper, we study the mass spectrum of SUSY particles and the extra Higgs fields, and summarize the phenomenology in the effective model. We survey the current experimental bounds from the LHC and the dark matter experiments as well as the flavor physics. Then, we point out the expected mass scale of the SUSY particles and reveal the future prospects for the direct and indirect searches. We also discuss the difference between our effective model and the 2HDM in the bottom-up approach.

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Natural generalized mirage mediation

Cited by 71 publications

References 85 publications

Minimal model of gravitino dark matter

Minimal model of gravitino dark matter

Superparticle phenomenology from the natural mini-landscape

Analysis of the TeV-scale mirage mediation with heavy superparticles

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