Analysis of the supersymmetry breaking induced by N = 1 supergravity theories

Soni, S. K.; Weldon, H. Arthur

doi:10.1016/0370-2693(83)90593-2

Cited by 324 publications

(322 citation statements)

References 15 publications

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“…For instance , in gravitymediation, then for any given hidden sector, the SUSY soft breaking terms are all calculated as numerical co-efficients times the gravitino mass [25,26,27]…”

Section: ∆ Bgmentioning

confidence: 99%

Implications of naturalness for the heavy Higgs bosons of supersymmetry

et al. 2014

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Recently, it has been argued that various measures of SUSY naturalness-electroweak, Higgs mass and EENZ/BG-when applied consistently, concur with one another and make very specific predictions for natural supersymmetric spectra. Highly natural spectra are characterized by light higgsinos with mass not too far from m h and well-mixed but TeV-scale third generation squarks. We apply the unified naturalness measure to the case of heavy Higgs bosons A, H and H ± . We find that their masses are bounded from above by naturalness depending on tan β: e.g. for 10% fine-tuning and tan β ∼ 10, we expect m A < ∼ 2.5 TeV whilst for 3% fine-tuning and tan β as high as 50, then m A < ∼ 8 TeV. Furthermore, the presence of light higgsinos seriously alters the heavy Higgs boson branching ratios, thus diminishing prospects for usual searches into Standard Model (SM) final states, while new discovery possibilities arise due to the supersymmetric decay modes. The heavy SUSY decay modes tend to be H, A, H ± → W, Z, or h+ E T + soft tracks so that single heavy Higgs production is characterized by the presence of high p T W , Z or h bosons plus missing E T . These new heavy Higgs boson signatures seem to be challenging to extract from SM backgrounds. *

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“…For instance , in gravitymediation, then for any given hidden sector, the SUSY soft breaking terms are all calculated as numerical co-efficients times the gravitino mass [25,26,27]…”

Section: ∆ Bgmentioning

confidence: 99%

Implications of naturalness for the heavy Higgs bosons of supersymmetry

et al. 2014

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“…For the present, we just note that we consider FI terms to be moduli dependent. 3 Strictly speaking, there is a contribution proportional to the derivative of the gauge kinetic function in the minimisation condition, eq.(3). As we are concerned with the general expressions for the matter field soft terms, these contributions will be proportional to matter field vevs which are much smaller than the moduli vev s and therefore we will neglect them here.…”

Section: General Expressions Including D-breakingmentioning

confidence: 99%

“…For example, if the Kähler and the gauge kinetic functions are canonical, this will lead to a universal soft spectrum with mSUGRA boundary conditions. While analysis of the above type are suitable for simplest classes of supersymmetry breaking models, for more complex situations it is useful to have general expressions for soft terms [3,4].…”

mentioning

confidence: 99%

Large D-terms, hierarchical soft spectra and moduli stabilisation

2005

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We derive general expressions for soft terms in supergravity where D-terms contribute significantly to the supersymmetry breaking in addition to the standard F-type breaking terms. Such D-terms can strongly influence the scalar mass squared terms, while having limited impact on gaugino masses and the B-terms. We present parameterisations for the soft terms when D-terms dominate over F-terms or become comparable with them. Novel patterns emerge which can be tested phenomenologically. In a mixed anomaly-D mediated scenario, the scalars have masses from D-mediation, whereas gaugino masses are generated by anomaly mediation. As an application of this analysis, we show that while the "split supersymmetry" like mass spectrum with one fine tuned Higgs is not an automatic outcome of these scenarios, explicit models can be constructed where it can be realised. Finally, weshow that large D-mediated supersymmetry breaking can be realised in string models based on intersecting D-branes. Examples are presented where the moduli are stabilised in the presence of large D-terms using non-perturbative gaugino condensation like effects.

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“…We argue that this result would hold for a much wider class of models if the current lower limit on the proton lifetime is increased by a factor of 4. We also show that p stability is sensitive to the nature of non-universal soft breaking [6,7,8] and that GUT models with certain type of non-universal soft breaking can already be eliminated on the basis of p stability and dark matter constraints.…”

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confidence: 76%

Limits on SUSY particle spectra from proton stability and dark matter constraints

Arnowitt¹,

Nath

1998

Physics Letters B

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It is shown that the combined constraints on the amount of cold dark matter and of proton stability produce a stringent upper limit on the gluino mass mg (and hence on the lightest neutralino mass m χ 0 1 ≃ mg/7 for a large class of gravity mediated supergravity unified models. One finds that for the minimal SU(5) model current data (Kamiokande) restricts mg ≤ 400 GeV for a scalar soft breaking mass m 0 ≤ 1 TeV. Expected future data from Super Kamionkande and ICARUS will be sensitive to the entire range of gluino mass for m 0 ≤ 1 TeV, and be able to exclude the region mg ≥ 500 GeV for m 0 ≤ 5 TeV. Effects of quark mass textures are studied and one finds that the bound mg ≤ 500 GeV holds when the experimental proton lifetime for the p →νK + mode becomes ≥ 5 × 10 32 yr. Implications of these results for a test of these models at the Tevatron and at the LHC are discussed. The effects of nonuniversal soft breaking in the Higgs and the third generation squark sectors are also examined, and it is found that the proton lifetime is sensitive to these non-universal effects. The current data already eliminates some regions of non-universalities. The constraints of proton stability on the direct detection of dark matter are seen to reduce the maximum event rates by as much as a factor of 10 3 .Introduction: In this Letter we study the combined constraints of proton stability and supersymmetric dark matter on supergravity unified models with R-parity invariance. We consider models where gravity breaks supersymmetry in a hidden sector at scale ≥ M G (the GUT scale) with gravity as the messenger to the physical sector. Models with R parity invariance eliminate in a natural fashion dimension four operators responsible for rapid proton decay. However, as is well known one can have proton decay proceeding via dimension five operators [1,2]. Simultaneously, with R parity invariance one finds that the lightest supersymmetric particle (LSP) is absolutely stable and further in supergravity unification [3,4] the LSP is seen to be the 1

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Analysis of the supersymmetry breaking induced by N = 1 supergravity theories

Cited by 324 publications

References 15 publications

Implications of naturalness for the heavy Higgs bosons of supersymmetry

Implications of naturalness for the heavy Higgs bosons of supersymmetry

Large D-terms, hierarchical soft spectra and moduli stabilisation

Limits on SUSY particle spectra from proton stability and dark matter constraints

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