New allowed mSUGRA parameter space from variations of the trilinear scalar coupling<i>A</i><sub>0</sub>

Stark, L. S.; Häfliger, P. S.; Biland, A.; Pauß, F.

doi:10.1088/1126-6708/2005/08/059

Cited by 24 publications

(30 citation statements)

References 52 publications

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“…Due to the high predictive power of the mSUGRA framework, where the SUSY breaking effects are transmitted from the highenergy scale to the electroweak scale by gravitons (Chamseddine et al 1982;Inoue et al 1982aInoue et al , 1982bInoue et al , 1984, we simulated several million models using the parameters m 0 6 TeV, m 1/2 4 TeV, À4 TeV A 0 4 TeV, tan 50, and > 0 (Stark et al 2005;Gondolo et al 2000). Figure 2 summarizes the resulting thermally averaged neutralino annihilation cross sections for all models not violating any observational constraints and resulting in a total DM relic density DM h 2 in agreement with the 2 upper limit (u.l.)…”

Section: Expected -Ray Flux From Neutralino Self-annihilationmentioning

confidence: 99%

Upper Limit for γ‐Ray Emission above 140 GeV from the Dwarf Spheroidal Galaxy Draco

Albert

Aliu

Anderhub

et al. 2008

ApJ

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The nearby dwarf spheroidal galaxy Draco, with its high mass to light ratio, is one of the most auspicious targets for indirect dark matter (DM ) searches. Annihilation of hypothetical DM particles can result in high-energy -rays, e.g., from neutralino annihilation in the supersymmetric framework. A search for a possible DM signal originating from Draco was performed with the MAGIC telescope during 2007. Analysis of the data results in a flux upper limit (2 ) of 1:1 ; 10 À11 photons cm À2 s À1 for photon energies above 140 GeV, assuming a pointlike source. A comparison with predictions from supersymmetric models is also given. While our results do not constrain the mSUGRA phase parameter space, a very high flux enhancement can be ruled out.

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Section: Expected -Ray Flux From Neutralino Self-annihilationmentioning

confidence: 99%

Upper Limit for γ‐Ray Emission above 140 GeV from the Dwarf Spheroidal Galaxy Draco

Albert

Aliu

Anderhub

et al. 2008

ApJ

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“…In Ref. [43], a scan was performed which included variations of A 0 and tan β as well as other mSUGRA parameters. It is clear from this paper that the WMAP allowed region (expressed in the M 1/2 -m 0 plane) becomes much larger from the A 0 variations.…”

Section: Introductionmentioning

confidence: 99%

Multidimensional mSUGRA likelihood maps

Allanach¹,

2006

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We calculate the likelihood map in the full 7 dimensional parameter space of the minimal supersymmetric standard model (MSSM) assuming universal boundary conditions on the supersymmetry breaking terms. Simultaneous variations of m0, A0, M 1/2 , tan β, mt, m b and αs(MZ) are applied using a Markov chain Monte Carlo algorithm. We use measurements of b → sγ, (g − 2)µ and ΩDM h 2 in order to constrain the model. We present likelihood distributions for some of the sparticle masses, for the branching ratio of B on this branching ratio might be achieved at the Tevatron, and would rule out 29% of the currently allowed likelihood. If one allows for non thermal-neutralino components of dark matter, this fraction becomes 35%. The mass ordering allows the important cascade decayqL → χ 0 2 →lR → χ 0 1 with a likelihood of 24±4%. The stop coannihilation region is highly disfavoured, whereas the light Higgs region is marginally disfavoured.

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“…These more restrictive constraints are well described by the quadratic polynomial for the soft scalar mass in terms of the soft gaugino mass [34]:…”

Section: Lepton Flavor Violation In Radiative Decaysmentioning

confidence: 99%

Lepton flavor violation in predictive supersymmetric GUT models

Albright

Chen

2008

Phys. Rev. D

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There have been many theoretical models constructed which aim to explain the neutrino masses and mixing patterns. While many of the models will be eliminated once more accurate determinations of the mixing parameters, especially sin 2 2θ 13 , are obtained, charged lepton flavor violation experiments are able to differentiate even further among the models. In this paper, we investigate various rare lepton flavor violation processes, such as ℓ i → ℓ j + γ and µ − e conversion, in five predictive supersymmetric (SUSY) SO(10) models and their allowed soft-SUSY breaking parameter space in the constrained minimal SUSY standard model. Utilizing the Wilkinson Microwave Anisotropy Probe dark matter constraints, we obtain lower bounds on the branching ratios of these rare processes and find that at least three of the five models we consider give rise to predictions for µ → e + γ that will be tested by the MEG Collaboration at PSI.In addition, the next generation µ − e conversion experiment has sensitivity to the predictions of all five models, making it an even more robust way to test these models. While generic studies have emphasized the dependence of the branching ratios of these rare processes on the reactor neutrino angle, θ 13 , and the mass of the heaviest right-handed neutrino, M 3 , we find very massive M 3 is more significant than large θ 13 in leading to branching ratios near to the present upper limits.

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New allowed mSUGRA parameter space from variations of the trilinear scalar couplingA₀

Abstract: In minimal Supergravity (mSUGRA) models the lightest supersymmetric particle (assumed to be the lightest neutralino χ

Cited by 24 publications

References 52 publications

Upper Limit for γ‐Ray Emission above 140 GeV from the Dwarf Spheroidal Galaxy Draco

Upper Limit for γ‐Ray Emission above 140 GeV from the Dwarf Spheroidal Galaxy Draco

Multidimensional mSUGRA likelihood maps

Lepton flavor violation in predictive supersymmetric GUT models

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New allowed mSUGRA parameter space from variations of the trilinear scalar couplingA0

Abstract: In minimal Supergravity (mSUGRA) models the lightest supersymmetric particle (assumed to be the lightest neutralino χ

Cited by 24 publications

References 52 publications

Upper Limit for γ‐Ray Emission above 140 GeV from the Dwarf Spheroidal Galaxy Draco

Upper Limit for γ‐Ray Emission above 140 GeV from the Dwarf Spheroidal Galaxy Draco

Multidimensional mSUGRA likelihood maps

Lepton flavor violation in predictive supersymmetric GUT models

Contact Info

Product

Resources

About

New allowed mSUGRA parameter space from variations of the trilinear scalar couplingA₀