Gravitino Dark Matter in the CMSSM

John Ellis; Keith A. Olive; Vassilis Spanos; Yudi Santoso

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Gravitino Dark Matter in the CMSSM

John Ellis, Keith A. Olive, Yudi Santoso, Vassilis Spanos

High Energy Physics - Phenomenology · Submitted 18 Dec 2003

abstract compiled · 2026-09-23 · no language-model review

The authors' main claim In this region, gravitinos might constitute the dark matter.

how it is stated · speculative 0.88 read the record →

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The compiled record

The paper's own sentences, arranged. Each label is drawn from a closed vocabulary; the number beside it is the probability the classifier gave that label. Numbers in the tables are the authors', checked by code. No sentence in this record was written by a model.

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Compiled by classifier-1.13-20260917 via OpenRouter, question bank abstract-p1-20260923, 2026-09-23: 1 request, 3,736 input tokens, $0.0002 reported.

What the abstract itself states, as probabilities: claims first 0.04 · states limitation 0.87 · human participants 0.01 · controlled comparison 0.04 · randomized assignment 0.01 · states quantitative result 0.10 · compares with prior results 0.60 · mentions code or data availability 0.02.

The abstract, sentence by sentence

arXiv listing abstract v4. Results and the main claim are underlined; show every role.

We consider the possibility that the gravitino might be the lightest supersymmetric particle (LSP) in the constrained minimal extension of the Standard Model (CMSSM). In this case, the next-to-lightest supersymmetric particle (NSP) would be unstable, with an abundance constrained by the concordance between the observed light-element abundances and those calculated on the basis of the baryon-to-entropy ratio determined using CMB data. We modify and extend previous CMSSM relic neutralino calculations to evaluate the NSP density, also in the case that the NSP is the lighter stau, and show that the constraint from late NSP decays is respected only in a limited region of the CMSSM parameter space. In this region, gravitinos might constitute the dark matter.

background contribution method result interpretation main claim

What the classifier reports for each sentence. The number is the probability it gave the label.
#	sentence	role	the authors' own work	states the main conclusion	strength
s0	We consider the possibility that the gravitino might be the lightest supersymmetric particle (LSP) in the constrained minimal extension of the Standard Model (CMSSM).	contribution 0.68	0.48	0.05	speculative 0.68
s1	In this case, the next-to-lightest supersymmetric particle (NSP) would be unstable, with an abundance constrained by the concordance between the observed light-element abundances and those calculated on the basis of the baryon-to-entropy ratio determined using CMB data.	background 0.99	0.09	0.06	asserted 0.85
s2	We modify and extend previous CMSSM relic neutralino calculations to evaluate the NSP density, also in the case that the NSP is the lighter stau, and show that the constraint from late NSP decays is respected only in a limited region of the CMSSM parameter space.	contribution 0.55	0.95	0.26	asserted 1.00
s3	In this region, gravitinos might constitute the dark matter.	interpretation 0.88	0.53	0.71	speculative 0.88

What kind of paper the classifier reports this is: theoretical result 0.58 · evidence from simulation or computation 0.99.

What was examined, and what was not

sources read

arXiv listing abstract v4

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full text
figures and tables
references and citing sentences
relations to other papers

levels run

P abstract

not run

S sections
T body sentences
C citations
R cross-paper relations

Every quoted sentence on this record is the authors'. Every label is from Pith's closed vocabulary, with the probability shown beside it. Every number in the measurements table is the authors', checked by code. Record as JSON

The paper

Original abstract

We consider the possibility that the gravitino might be the lightest supersymmetric particle (LSP) in the constrained minimal extension of the Standard Model (CMSSM). In this case, the next-to-lightest supersymmetric particle (NSP) would be unstable, with an abundance constrained by the concordance between the observed light-element abundances and those calculated on the basis of the baryon-to-entropy ratio determined using CMB data. We modify and extend previous CMSSM relic neutralino calculations to evaluate the NSP density, also in the case that the NSP is the lighter stau, and show that the constraint from late NSP decays is respected only in a limited region of the CMSSM parameter space. In this region, gravitinos might constitute the dark matter.

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References

Forward citations

Cited by 12 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

Aspects of Split Supersymmetry
hep-ph 2004-09 accept novelty 7.0 of 10

Split Supersymmetry's heavy-scalar, light-fermion spectrum can emerge naturally from R-symmetric supersymmetry breaking, and it predicts electric dipole moments near current limits plus a gravitino-boosted dark matter...
The Case for an EeV Gravitino
hep-ph 2017-04 conditional novelty 6.0 of 10

Pushing the supersymmetric spectrum above the inflationary scale makes an EeV-scale gravitino a viable dark matter candidate and predicts a reheating temperature of 10^10 to 10^12 GeV.
Nucleosynthesis Constraints on a Massive Gravitino in Neutralino Dark Matter Scenarios
astro-ph.CO 2009-07 conditional novelty 6.0 of 10

Decaying gravitinos in neutralino dark matter scenarios must have had a pre-decay mass density below roughly 3e-12 to 2e-13 GeV per photon for gravitino masses of 250 GeV to 1 TeV, or they would have over-produced deu...
Mass Bounds on a Very Light Neutralino
hep-ph 2009-01 conditional novelty 5.0 of 10

Dropping the grand-unification relation between the two gaugino masses, a massless lightest neutralino is consistent with LEP collider data, electroweak precision observables, rare meson decays, supernova cooling, and...
The diphoton signal of the light Higgs boson in Natural NMSSM
hep-ph 2016-12 conditional novelty 4.0 of 10

Adding LUX and PandaX-II dark matter limits cuts the maximum 8 TeV diphoton rate of the light NMSSM Higgs near 80 GeV from above 120 fb to about 25 fb.

Show 7 more citing papers

Physics at a 100 TeV pp collider: beyond the Standard Model phenomena
hep-ph 2016-06 conditional novelty 4.0 of 10

Compiles projected 100 TeV reach estimates for supersymmetry, dark matter, and exotic resonances, finding multi-TeV sensitivity well beyond the LHC in nearly every channel studied.
Phenomenological Indications of the Scale of Supersymmetry
hep-ph 2006-02 conditional novelty 4.0 of 10

A global chi-square fit of five observables in four constrained SUSY scenarios favors a low soft-supersymmetry-breaking scale m1/2 near 300 to 600 GeV.
Les Houches "Physics at TeV Colliders 2005'' Beyond the Standard Model working group: summary report
hep-ph 2006-02 accept novelty 4.0 of 10

A comprehensive proceedings summary of BSM physics at TeV colliders, with reviews, tools, and original studies of SUSY and non-SUSY scenarios.
Dark matter production in the early Universe: beyond the thermal WIMP paradigm
hep-ph 2014-06 accept novelty 2.0 of 10

A comprehensive review argues that thermally produced WIMPs are increasingly constrained and that mixed axion/supersymmetric dark matter, including axinos and saxions, is a better-motivated target for the next generat...
Dark Matter Candidates from Particle Physics and Methods of Detection
astro-ph.CO 2010-03 accept novelty 2.0 of 10

A structured 2010 survey that sorts dark matter candidates by the particle-physics problem motivating each one and tabulates what each predicts for direct detection, indirect detection, colliders, and astrophysics.
Particle Dark Matter: Evidence, Candidates and Constraints
hep-ph 2004-04 accept novelty 2.0 of 10

The review concludes that neutralinos and Kaluza-Klein B(1) particles remain viable dark matter candidates, with direct and indirect searches providing the strongest current and near-future tests.
Collider Signatures of SuperWIMP Warm Dark Matter
hep-ph 2006-03 unverdicted

SuperWIMP dark matter would make charged supersymmetric particles appear long-lived at colliders, so they could be trapped, studied, and connected to dark matter.

How the literature uses it

51 arXiv papers cite this in 67 sentences

Each citing sentence is taken from the citing paper's LaTeX source and typed by Pith's classifier. A label appears at probability 0.8 or more (0.95 for support), a contest at 0.7 or more; the quoted words are the citing authors'. How each label was checked · JSON

Papers citing it · 46 sentences without a confident label

Compares with it 2 papers

this result conduces to the known decay width found in [ref] .

Helicity Amplitudes for production of massive gravitino/goldstino · 2-body neutralino decay $χ̃_0→Ψ̃^μ Z$ · 0.95
In the high-energy limit, where $Π^±_μν(k) ≃-k (g_μν - 2p_μp_ν/3m^2_G̃)$, we match the well-known result [ref] , Γ_χ̃_0 →G̃γ = cos^2θ_W m^5_χ̃_0/16 πF_SUSY^2 (1-m^2_G̃/m^2_χ̃_0)^3 (1+3m^2_G̃/m^2_χ̃_0).

Probing some photon portals to new physics at intensity frontier experiments · LLP decays · 0.90

Cites it as background 17 papers

Let us now address the implications of the results derived above to SUSY extensions of the Standard Model in which the gravitino $$ is the LSP and a charged slepton $$ the NLSP [ref] .

Constraints on Supersymmetric Models from Catalytic Primordial Nucleosynthesis of Beryllium · Implications for Supersymmetric Models · 0.97
However, there are other dark matter candidates as well, for example the gravitino [ref] and the axino [ref] , the superpartner of axion [ref] which solves the QCD problem via the Peccei-Quinn mechanism [ref] .

Dark matter in supersymmetric models with axino LSP in Randall-Sundrum II brane model · Introduction · 0.90
In this case the lightest supersymmetric particle is stable and is potentially a viable dark matter candidate [ref] .

Gravitino dark matter and neutrino masses with bilinear R-parity violation · Gravitino cosmology · 0.90

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