Predictions of SUSY masses in the minimal supersymmetric grand unified theory

Boer, W. De; Ehret, R.; Kazakov, D. I.

doi:10.1007/bf01553992

Cited by 78 publications

(63 citation statements)

References 63 publications

(65 reference statements)

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“…where ∆ (1) µ , ∆ (2) µ and ∆ B are loop corrections to the relationships [136][137][138]. This scenario has a very restricted parameter space that does not, in general, realize electroweak symmetry breaking [131].…”

Section: Jhep02(2016)071mentioning

confidence: 99%

Scenarios for gluino coannihilation

Ellis

Evans

Luo

et al. 2016

J. High Energ. Phys.

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We study supersymmetric scenarios in which the gluino is the next-to-lightest supersymmetric particle (NLSP), with a mass sufficiently close to that of the lightest supersymmetric particle (LSP) that gluino coannihilation becomes important. One of these scenarios is the MSSM with soft supersymmetry-breaking squark and slepton masses that are universal at an input GUT renormalization scale, but with non-universal gaugino masses. The other scenario is an extension of the MSSM to include vector-like supermultiplets. In both scenarios, we identify the regions of parameter space where gluino coannihilation is important, and discuss their relations to other regions of parameter space where other mechanisms bring the dark matter density into the range allowed by cosmology. In the case of the non-universal MSSM scenario, we find that the allowed range of parameter space is constrained by the requirement of electroweak symmetry breaking, the avoidance of a charged LSP and the measured mass of the Higgs boson, in particular, as well as the appearance of other dark matter (co)annihilation processes. Nevertheless, LSP masses m χ 8 TeV with the correct dark matter density are quite possible. In the case of pure gravity mediation with additional vector-like supermultiplets, changes to the anomalymediated gluino mass and the threshold effects associated with these states can make the gluino almost degenerate with the LSP, and we find a similar upper bound.

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Section: Jhep02(2016)071mentioning

confidence: 99%

Scenarios for gluino coannihilation

Ellis

Evans

Luo

et al. 2016

J. High Energ. Phys.

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“…where ∆ A and ∆ (1,2) µ are loop corrections [18][19][20], Q = (mτ R mτ L ) 1/2 , and all quantities in (2) are defined at the electroweak scale, m Z . Unless otherwise noted, m A ≡ m A (Q) and µ ≡ µ(m Z ).…”

Section: From the Cmssm To The Nuhm1mentioning

confidence: 99%

Varying the universality of supersymmetry-breaking contributions to MSSM Higgs boson masses

2008

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We consider the minimal supersymmetric extension of the Standard Model (MSSM) with varying amounts of non-universality in the soft supersymmetry-breaking contributions to the Higgs scalar masses. In addition to the constrained MSSM (CMSSM) in which these are universal with the soft supersymmetry-breaking contributions to the squark and slepton masses at the input GUT scale, we consider scenarios in which both the Higgs scalar masses are non-universal by the same amount (NUHM1), and scenarios in which they are independently non-universal (NUHM2). We show how the NUHM1 scenarios generalize the (m 1/2 , m 0 ) planes of the CMSSM by allowing either µ or m A to take different (fixed) values and we also show how the NUHM1 scenarios are embedded as special cases of the more general NUHM2 scenarios. Generalizing from the CMSSM, we find regions of the NUHM1 parameter space that are excluded because the LSP is a selectron. We also find new regions where the neutralino relic density falls within the range preferred by astrophysical and cosmological measurements, thanks to rapid annihilation through direct-channel Higgs poles, or coannihilation with selectrons, or because the LSP composition crosses over from being mainly bino to mainly Higgsino. Generalizing further to the NUHM2, we find regions of its parameter space where a sneutrino is the LSP, and others where neutralino coannihilation with sneutrinos is important for the relic density. In both the NUHM1 and the NUHM2, there are slivers of parameter space where the LHC has fewer prospects for discovering sparticles than in the CMSSM, because either m 1/2 and/or m 0 may be considerably larger than in the CMSSM.

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“…Knowing them at the GUT scale, one can solve the corresponding RG equations, thus linking the values at the GUT and electroweak scales. Substituting these parameters into the mass matrices, one can predict the mass spectrum of the superpartners [29,30].…”

Section: The Soft Terms and The Mass Formulaementioning

confidence: 99%

Introduction to Supersymmetry

Kazakov¹

2015

Proceedings of Proceedings of the Corfu Summer Institute 2014 — PoS(CORFU2014)

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Predictions of SUSY masses in the minimal supersymmetric grand unified theory

Cited by 78 publications

References 63 publications

Scenarios for gluino coannihilation

Scenarios for gluino coannihilation

Varying the universality of supersymmetry-breaking contributions to MSSM Higgs boson masses

Introduction to Supersymmetry

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