High Energy Physics - Phenomenology · arXiv:hep-ph/0506229 v4 · submitted 23 Jun 2005
Constraining Gravitino Dark Matter with the Cosmic Microwave Background
The paper says
“Unlike the analytical approximations, we find that there may be a stau mass below which the constraint from the CMB spectrum vanishes.”
from the abstract · picked out as the main claim by a classifier
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The paper
Abstract
We consider super-gravity models in which the lightest supersymmetric particle (LSP) is a stable gravitino. The next-to-lightest supersymmetric particle (NLSP) freezes out with its thermal relic density and then decays after (105−1010) sec, injecting high-energy photons into the cosmic plasma. These photons heat up the electron plasma which then thermalizes with the cosmic microwave background (CMB) via Compton scattering, bremsstrahlung and double-Compton scattering. Contrary to previous studies which assume instantaneous energy injection, we solve the full kinetic equation for the photon number density with a source term describing the decay of the NLSP. This source term is based on the requirement that the injected energy be almost instantaneously redistributed by Compton scattering, hence leading to a time-dependent chemical potential. We investigate the case of a stau NLSP and determine the constraints on the gravitino and stau masses from observations of the CMB spectrum by assuming that all gravitino LSPs come from stau NLSP decays. Unlike the analytical approximations, we find that there may be a stau mass below which the constraint from the CMB spectrum vanishes.
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. No sentence in this record was written by a model.
abstract compiled · 2026-09-23 · no language-model review
How the main claim is stated: hedged possibility 0.97
What the abstract itself states, as probabilities: claims first 0.07 · states limitation 0.43 · human participants 0.01 · controlled comparison 0.11 · randomized assignment 0.01 · states quantitative result 0.50 · compares with prior results 0.96 · mentions code or data availability 0.02
The abstract, sentence by sentence
This table labels the abstract only (arXiv listing abstract v4). The number is the probability the classifier gave the label.
| Sentence | Role | The authors' own work | States the main conclusion | Strength |
|---|---|---|---|---|
| We consider super-gravity models in which the lightest supersymmetric particle (LSP) is a stable gravitino. | background 0.79 | 0.42 | 0.02 | asserted 0.86 |
| The next-to-lightest supersymmetric particle (NLSP) freezes out with its thermal relic density and then decays after $(10^5-10^{10})$ sec, injecting high-energy photons into the cosmic plasma. | background 0.74 | 0.17 | 0.03 | asserted 1.00 |
| These photons heat up the electron plasma which then thermalizes with the cosmic microwave background (CMB) via Compton scattering, bremsstrahlung and double-Compton scattering. | background 0.69 | 0.14 | 0.03 | asserted 1.00 |
| Contrary to previous studies which assume instantaneous energy injection, we solve the full kinetic equation for the photon number density with a source term describing the decay of the NLSP. | method 0.62 | 0.95 | 0.06 | asserted 1.00 |
| This source term is based on the requirement that the injected energy be almost instantaneously redistributed by Compton scattering, hence leading to a time-dependent chemical potential. | method 0.99 | 0.76 | 0.04 | asserted 0.98 |
| We investigate the case of a stau NLSP and determine the constraints on the gravitino and stau masses from observations of the CMB spectrum by assuming that all gravitino LSPs come from stau NLSP decays. | contribution 0.82 | 0.95 | 0.12 | asserted 0.97 |
| Unlike the analytical approximations, we find that there may be a stau mass below which the constraint from the CMB spectrum vanishes. | result 1.00 | 0.96 | 0.71 | hedged possibility 0.97 |
What kind of paper the classifier reports this is: theoretical result 0.82 · evidence from simulation or computation 0.54
What was examined, and what was not
Sources read
- arXiv listing abstract v4
Not examined
- 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
How the labels were made
Compiled by classifier-1.13-20260917 via OpenRouter, question bank abstract-p1-20260923, 2026-09-23: 1 request, 5,747 input tokens, $0.0002 reported.
Every quoted sentence on this record is the authors'. Every label is from Pith's closed vocabulary, with the probability shown beside it. This record as JSON
Cited by 5 Pith papers
Reviewed papers on Pith that cite this one. The full citation record
- Gravitino Dark Matter and Cosmological Constraints hep-ph · May 2006
- The number density of a charged relic hep-ph · Jul 2008
- Dark Matter from Early Decays astro-ph · Jul 2005
- SuperWIMP Solutions to Small Scale Structure Problems hep-ph · Jul 2005
- Dark Matter Candidates from Particle Physics and Methods of Detection astro-ph.CO · Mar 2010
How the literature uses it
4 arXiv papers cite this in 4 sentences
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