High Energy Physics - Phenomenology · arXiv:1012.1597 v2 · submitted 7 Dec 2010
Early Universe effective theories: The Soft Leptogenesis and R-Genesis Cases
The paper says
“Baryogenesis thus occurs mainly through R-genesis, and with an efficiency that can be up to two orders of magnitude larger than in usual estimates.”
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The paper
Abstract
We discuss the effective theory appropriate for studying soft leptogenesis at temperatures T>10^7 GeV. In this regime, the main source of the B-L asymmetry is the CP asymmetry of a new anomalous R-charge that couple to generalized anomalous electroweak processes. Baryogenesis thus occurs mainly through R-genesis, and with an efficiency that can be up to two orders of magnitude larger than in usual estimates. Contrary to common belief, a sizeable baryon asymmetry is generated also when thermal corrections to the CP asymmetries in sneutrino decays are neglected which, in soft leptogenesis, implyes vanishing lepton-flavour CP asymmetries. We present general Boltzmann equations for soft leptogenesis that are valid in all temperature regimes.
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abstract compiled · 2026-09-23 · no language-model review
How the main claim is stated: asserted 0.80
What the abstract itself states, as probabilities: claims first 0.04 · states limitation 0.14 · human participants 0.01 · controlled comparison 0.14 · randomized assignment 0.01 · states quantitative result 0.92 · compares with prior results 0.89 · mentions code or data availability 0.02
The abstract, sentence by sentence
This table labels the abstract only (arXiv listing abstract v2). The number is the probability the classifier gave the label.
| Sentence | Role | The authors' own work | States the main conclusion | Strength |
|---|---|---|---|---|
| We discuss the effective theory appropriate for studying soft leptogenesis at temperatures T>10^7 GeV. | contribution 0.84 | 0.74 | 0.05 | asserted 0.78 |
| In this regime, the main source of the B-L asymmetry is the CP asymmetry of a new anomalous R-charge that couple to generalized anomalous electroweak processes. | result 0.65 | 0.39 | 0.16 | asserted 1.00 |
| Baryogenesis thus occurs mainly through R-genesis, and with an efficiency that can be up to two orders of magnitude larger than in usual estimates. | result 0.80 | 0.69 | 0.49 | asserted 0.80 |
| Contrary to common belief, a sizeable baryon asymmetry is generated also when thermal corrections to the CP asymmetries in sneutrino decays are neglected which, in soft leptogenesis, implyes vanishing lepton-flavour CP asymmetries. | result 0.98 | 0.69 | 0.25 | asserted 1.00 |
| We present general Boltzmann equations for soft leptogenesis that are valid in all temperature regimes. | contribution 0.91 | 0.93 | 0.08 | asserted 1.00 |
What kind of paper the classifier reports this is: theoretical result 0.94 · evidence from proof or derivation 0.87
What was examined, and what was not
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- arXiv listing abstract v2
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- full text
- figures and tables
- references and citing sentences
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- C citations
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Compiled by classifier-1.13-20260917 via OpenRouter, question bank abstract-p1-20260923, 2026-09-23: 1 request, 4,346 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
How the literature uses it
11 arXiv papers cite this in 15 sentences
Papers citing it · 14 sentences without a confident label
Cites it as background 1 paper
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Soft leptogenesis [ref] pertains to generating lepton asymmetry at the tree-level itself due to mixing between the particle and anti-particle states of the RH singlet sneutrino, $Ñ$, because of the presence of soft SUSY breaking terms[Soft leptogenesis in different types of SUSY framework can be found in [ref] .].
Soft leptogenesis in the NMSSM with a singlet right-handed neutrino superfield · Introduction · 0.95
What it cites · 83 sentences without a confident label
Builds on 3 papers
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Let us note at this point that the $3×5$ submatrix $A_ℓ_αb$ for the lepton densities represents the generalization of the $A$ matrix introduced in [ref] , $A_H̃_u b$ generalizes the Higgs $C$-vector first introduced in [ref] , and $A_g̃ b$ generalizes the $C$-vector for the gauginos first introduced in [ref] .
Supersymmetric Leptogenesis · Chemical equilibrium conditions and conservation laws · 0.97
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Let us note at this point that the $3×5$ submatrix $A_ℓ_αb$ for the lepton densities represents the generalization of the $A$ matrix introduced in [ref] , $A_H̃_u b$ generalizes the Higgs $C$-vector first introduced in [ref] , and $A_g̃ b$ generalizes the $C$-vector for the gauginos first introduced in [ref] .
Baryogenesis through leptogenesis · Chemical equilibrium conditions and conservation laws · 0.97
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Let us note at this point that the $3×5$ submatrix $A_ℓ_αb$ for the lepton densities represents the generalization of the $A$ matrix introduced in [ref] , $A_H̃_u b$ generalizes the Higgs $C$-vector first introduced in [ref] , and $A_g̃ b$ generalizes the $C$-vector for the gauginos first introduced in [ref] .
On Higgs and sphaleron effects during the leptogenesis era · Chemical equilibrium conditions and conservation laws · 0.97
Uses data or values from 1 paper
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Finally, the thermal masses for the relevant scalar and fermion particle species are [ref] :
Towards a complete theory of thermal leptogenesis in the SM and MSSM · Thermal factors · 0.96
Compares with 5 papers
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This situation is reminiscent of the so called Purely Flavoured Leptogenesis (PFL) scenarios [ref] where the vanishing of the total CP asymmetry resulting from the sum over lepton flavours $ϵ=∑_αϵ_α=0$ ($α=e,μ,τ$) does not imply a vanishing baryon asymmetry $ΔB∝∑_αη_αϵ_α≠0$.
Variations on leptogenesis · Introduction · 0.84
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This situation is reminiscent of the so called Purely Flavoured Leptogenesis (PFL) scenarios [ref] where the vanishing of the total CP asymmetry resulting from the sum over lepton flavours $ϵ=∑_αϵ_α=0$ ($α=e,μ,τ$) does not imply a vanishing baryon asymmetry $ΔB∝∑_αη_αϵ_α≠0$.
Purely Flavored Leptogenesis · Introduction · 0.84
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This situation is reminiscent of the so called Purely Flavoured Leptogenesis (PFL) scenarios [ref] where the vanishing of the total CP asymmetry resulting from the sum over lepton flavours $ϵ=∑_αϵ_α=0$ ($α=e,μ,τ$) does not imply a vanishing baryon asymmetry $ΔB∝∑_αη_αϵ_α≠0$.
Non-unitary Leptonic Mixing and Leptogenesis · Introduction · 0.84
Cites as support 1 paper
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Fortunately, in the strong washout regime for leptogenesis, the effects of CP asymmetries in scattering have been found to be subdominant with respect to CP asymmetries in decays [ref] , and since in this paper we focus precisely on strong washouts, neglecting the scattering CP asymmetries is justified.
CP violation in scatterings, three body processes and the Boltzmann equations for leptogenesis · Boltzmann Equations · 1.00
Cites as background 13 papers
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The set of conditions that constrain the particle abundances at this temperatures are listed below, more details about the various constraints can be found in [ref] .
Supersymmetric Leptogenesis · Chemical equilibrium conditions and conservation laws · 0.82
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This allows for a different leptogenesis scenario that is specific to supersymmetry known as `soft leptogenesis' [ref] .
Leptogenesis at Low Scale · Soft leptogenesis: review and motivations · 0.80
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This allows for a different leptogenesis scenario that is specific to supersymmetry known as `soft leptogenesis' [ref] .
Leptogenesis from Supersymmetry Breaking · Soft leptogenesis: review and motivations · 0.80
Challenges and discussion
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