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Primordial heavy elements in composite dark matter models
Astrophysics · Submitted 31 Dec 2007
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim It is shown that stable charged leptons and quarks can exist and, hidden in elusive atoms, play the role of dark matter.
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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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The abstract, sentence by sentence
A widely accepted viewpoint is to consider candidates for cosmological dark matter as neutral and weakly interacting particles, as well as to consider only light elements in the pregalactic chemical composition. It is shown that stable charged leptons and quarks can exist and, hidden in elusive atoms, play the role of dark matter. The inevitable consequence of realistic scenarios with such composite atom-like dark matter is existence of significant or even dominant fraction of "atoms", binding heavy -2 charged particles and He-4 nuclei. Being alpha-particles with shielded electric charge, such atoms catalyse a new path of nuclear transformations in the period of Big Bang Nucleosynthesis, which result in primordial heavy elements. The arguments are given, why such scenario escapes immediate contradiction with observations and challenges search for heavy stable charged particles in cosmic rays and at accelerators.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | A widely accepted viewpoint is to consider candidates for cosmological dark matter as neutral and weakly interacting particles, as well as to consider only light elements in the pregalactic chemical composition. | background 1.00 | 0.04 | 0.03 | asserted 0.93 |
| s1 | It is shown that stable charged leptons and quarks can exist and, hidden in elusive atoms, play the role of dark matter. | contribution 0.55 | 0.81 | 0.52 | asserted 0.88 |
| s2 | The inevitable consequence of realistic scenarios with such composite atom-like dark matter is existence of significant or even dominant fraction of "atoms", binding heavy -2 charged particles and He-4 nuclei. | result 0.85 | 0.62 | 0.36 | asserted 0.99 |
| s3 | Being alpha-particles with shielded electric charge, such atoms catalyse a new path of nuclear transformations in the period of Big Bang Nucleosynthesis, which result in primordial heavy elements. | result 0.70 | 0.55 | 0.32 | asserted 0.99 |
| s4 | The arguments are given, why such scenario escapes immediate contradiction with observations and challenges search for heavy stable charged particles in cosmic rays and at accelerators. | interpretation 0.94 | 0.77 | 0.15 | asserted 0.97 |
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The paper
Original abstract
A widely accepted viewpoint is to consider candidates for cosmological dark matter as neutral and weakly interacting particles, as well as to consider only light elements in the pregalactic chemical composition. It is shown that stable charged leptons and quarks can exist and, hidden in elusive atoms, play the role of dark matter. The inevitable consequence of realistic scenarios with such composite atom-like dark matter is existence of significant or even dominant fraction of "atoms", binding heavy -2 charged particles and He-4 nuclei. Being alpha-particles with shielded electric charge, such atoms catalyse a new path of nuclear transformations in the period of Big Bang Nucleosynthesis, which result in primordial heavy elements. The arguments are given, why such scenario escapes immediate contradiction with observations and challenges search for heavy stable charged particles in cosmic rays and at accelerators.
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References
How the literature uses it
6 arXiv papers cite this in 7 sentences
Papers citing it · 3 sentences without a confident label
Cites it as background 4 papers
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Here we concentrate on the properties of OHe atoms, their interaction with matter and qualitative picture of OHe cosmological evolution [ref] and observable effects.
Fundamental Particle Structure in the Cosmological Dark Matter · Dark atoms with helium shell · 0.84
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Here after a brief review of possible charged constituents of dark atoms, we concentrate on the properties of OHe atoms, their interaction with matter and qualitative picture of OHe cosmological evolution [ref] and observable effects.
Physics of Dark Matter in the Light of Dark Atoms · Introduction · 0.87
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In all these recent models (see review in [ref] ), the predicted stable charged particles form neutral atom-like states, composing the dark matter of the modern Universe and escaping experimental discovery.
Composite dark matter from a model with composite Higgs boson · Introduction · 0.85
What it cites · 72 sentences without a confident label
Contests 1 paper
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The model [ref] didn't offer any physical mechanism for generation of cosmological tera-particle asymmetry and such asymmetry was postulated to saturate the observed dark matter dark matter density.
A Sinister Extension of the Standard Model to SU(3)XSU(2)XSU(2)XU(1) · Problems of composite dark matter · contest 0.77
Uses data or values from 2 papers
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The size of these “atoms" is [ref] R_o ∼1/(Z_TC Z_Heαm_He) ≈2 ·10^-13 .
Composite dark matter from 4th generation · Formation of O-helium · 0.94
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The size of these “atoms" is [ref] R_o ∼1/(Z_TC Z_Heαm_He) ≈2 ·10^-13 .
Dark matter with invisible light from heavy double charged leptons of almost-commutative geometry? · Formation of O-helium · 0.94
Compares with 11 papers
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However, qualitatively one can expect much easier path for O-helium catalysis of primordial heavy elements primordial heavy elements, than in CBBN CBBN [ref] or in nonthermal nucleosynthesis nonthermal nucleosynthesis [ref] ).
The cosmic 6Li and 7Li problems and BBN with long-lived charged massive particles · Discussion · 0.93
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However, qualitatively one can expect much easier path for O-helium catalysis of primordial heavy elements primordial heavy elements, than in CBBN CBBN [ref] or in nonthermal nucleosynthesis nonthermal nucleosynthesis [ref] ).
Bridging the primordial A=8 divide with Catalyzed Big Bang Nucleosynthesis · Discussion · 0.93
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However, qualitatively one can expect much easier path for O-helium catalysis of primordial heavy elements primordial heavy elements, than in CBBN CBBN [ref] or in nonthermal nucleosynthesis nonthermal nucleosynthesis [ref] ).
Hadronic Decay of Late-Decaying Particles and Big-Bang Nucleosynthesis · Discussion · 0.93
Cites as support 4 papers
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Owing to large chromo-Coulomb binding energy ($∝α_c^2 ·m_U$, where $α_c$ is the QCD constant) stable double and triple $U$ bound states $(UUq)$, $(UUU)$ and their antiparticles $(U̅ U̅ u̅)$, $(U̅ U̅ U̅)$ can exist [ref] .
A Sinister Extension of the Standard Model to SU(3)XSU(2)XSU(2)XU(1) · Stable pieces of 4th generation matter · 0.96
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Owing to large chromo-Coulomb binding energy ($∝α_c^2 ·m_U$, where $α_c$ is the QCD constant) stable double and triple $U$ bound states $(UUq)$, $(UUU)$ and their antiparticles $(U̅ U̅ u̅)$, $(U̅ U̅ U̅)$ can exist [ref] .
Tera-Leptons Shadows over Sinister Universe · Stable pieces of 4th generation matter · 0.96
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However, the following arguments [ref] show that this effect may not lead to immediate contradiction with observations as it might be expected. $∙$ On the path of reactions ([ref]), the final nucleus can be formed in the excited $(α, M(A,Z))$ state, which can rapidly experience an $α$- decay, giving rise to O-helium regeneration and to an effective quasi-elastic process of $(^4He^++A^–)$-nucleus scattering.
Strong Interactive Massive Particles from a Strong Coupled Theory · Primordial heavy elements from O-helium catalysis · 0.96
Cites as background 22 papers
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The AC-model AC-model [ref] appeared as realistic elementary particle model, based on the specific approach of [ref] to unify general relativity, quantum mechanics and gauge symmetry.
Almost-Commutative Geometries Beyond the Standard Model · Stable AC leptons from almost commutative geometry · 0.88
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Glashow's "Sinister" scenario [ref] took into account that
A Sinister Extension of the Standard Model to SU(3)XSU(2)XSU(2)XU(1) · Charged tera-particles · 0.84
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Recently several elementary particle frames for heavy stable charged particles were considered: (a) A heavy quark quark and heavy neutral lepton lepton (neutrino neutrino with mass above half the Z-Boson mass) of fourth generation [ref] ; which can avoid experimental constraints [ref] and form composite dark matter species [ref] ; (b) A Glashow's “Sinister” heavy tera-quark tera-quark $U$ and tera-electron tera-electron $E$, which can form a tower of tera-hadronic and tera-atomic bound states with “tera-helium atoms” $(UUUEE)$ considered as dominant dark matter [ref] .
Composite Dark Matter and its Charged Constituents · Introduction · 0.89
Discussion
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