CP violation in neutrino oscillation and leptogenesis

M. Tanimoto; S. Kaneko; S. K. Kang; T. Endoh; T. Morozumi

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CP violation in neutrino oscillation and leptogenesis

T. Endoh, S. Kaneko, S. K. Kang, T. Morozumi, M. Tanimoto

High Energy Physics - Phenomenology · Submitted 3 Sep 2002

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

The authors' main claim We show how the heavy Majorana phase contributes to Jarlskog determinant $J$ as well as neutrinoless double $\beta$ decay by identifying a low energy CP violating phase which signals the CP violating phase for leptogenesis.

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arXiv IDhep-ph/0209020 (version 1)

Pith IDUTCEU6F2, Pith's permanent record of this paper and its review

CitationM. Tanimoto, S. Kaneko, S. K. Kang, T. Endoh, T. Morozumi. "CP violation in neutrino oscillation and leptogenesis." arXiv:hep-ph/0209020 (2002). https://pith.science/paper/UTCEU6F2

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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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Compiled by classifier-1.13-20260917 via OpenRouter, question bank abstract-p1-20260923, 2026-09-23: 1 request, 4,351 input tokens, $0.0002 reported.

What the abstract itself states, as probabilities: claims first 0.03 · states limitation 0.84 · human participants 0.01 · controlled comparison 0.03 · randomized assignment 0.01 · states quantitative result 0.05 · compares with prior results 0.06 · mentions code or data availability 0.01.

The abstract, sentence by sentence

arXiv listing abstract v1. Results and the main claim are underlined; show every role.

We study the correlation between CP violation in neutrino oscillations and leptogenesis in the framework with two heavy Majorana neutrinos and three light neutrinos. Among three unremovable CP phases, a heavy Majorana phase contributes to leptogenesis. We show how the heavy Majorana phase contributes to Jarlskog determinant $J$ as well as neutrinoless double $\beta$ decay by identifying a low energy CP violating phase which signals the CP violating phase for leptogenesis. For some specific cases of the Dirac mass term of neutrinos, a direct relation between lepton number asymmetry and $J$ is obtained. For the most general case of the framework, we study the effect on $ J $ coming from the phases which are not related to leptogenesis, and also show how the correlation can be lost in the presence of those phases.

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 study the correlation between CP violation in neutrino oscillations and leptogenesis in the framework with two heavy Majorana neutrinos and three light neutrinos.	contribution 0.98	0.87	0.07	asserted 0.72
s1	Among three unremovable CP phases, a heavy Majorana phase contributes to leptogenesis.	result 0.90	0.46	0.13	asserted 1.00
s2	We show how the heavy Majorana phase contributes to Jarlskog determinant $J$ as well as neutrinoless double $\beta$ decay by identifying a low energy CP violating phase which signals the CP violating phase for leptogenesis.	contribution 0.65	0.92	0.31	asserted 1.00
s3	For some specific cases of the Dirac mass term of neutrinos, a direct relation between lepton number asymmetry and $J$ is obtained.	result 0.99	0.91	0.24	asserted 0.99
s4	For the most general case of the framework, we study the effect on $ J $ coming from the phases which are not related to leptogenesis, and also show how the correlation can be lost in the presence of those phases.	contribution 0.56	0.93	0.17	asserted 1.00

What kind of paper the classifier reports this is: theoretical result 1.00 · evidence from proof or derivation 1.00.

What was examined, and what was not

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arXiv listing abstract v1

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full text
figures and tables
references and citing sentences
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P abstract

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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 study the correlation between CP violation in neutrino oscillations and leptogenesis in the framework with two heavy Majorana neutrinos and three light neutrinos. Among three unremovable CP phases, a heavy Majorana phase contributes to leptogenesis. We show how the heavy Majorana phase contributes to Jarlskog determinant $J$ as well as neutrinoless double $\beta$ decay by identifying a low energy CP violating phase which signals the CP violating phase for leptogenesis. For some specific cases of the Dirac mass term of neutrinos, a direct relation between lepton number asymmetry and $J$ is obtained. For the most general case of the framework, we study the effect on $ J $ coming from the phases which are not related to leptogenesis, and also show how the correlation can be lost in the presence of those phases.

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References

Forward citations

Cited by 7 Pith papers

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

Cosmic Collider Gravitational Waves sourced by Right-handed Neutrino production from Bubbles: Testing Seesaw, Leptogenesis and Dark Matter
astro-ph.CO 2026-01 unverdicted novelty 7.0 of 10

Bubble collisions in a seesaw model produce right-handed neutrinos that source novel gravitational waves detectable by LISA, ET, and LVK while allowing the lightest RHN to explain dark matter or enable leptogenesis.
Confronting the seesaw mechanism with neutrino oscillations: a general and explicit analytical bridge
hep-ph 2024-12 conditional novelty 6.0 of 10

The paper provides, for the first time, explicit analytical expressions for the two mass-squared differences, three mixing angles, and effective Dirac CP phase of the canonical seesaw mechanism in terms of its 18 para...
Testing Seesaw and Leptogenesis with Gravitational Waves
hep-ph 2019-08 conditional novelty 6.0 of 10

Thermal leptogenesis through the seesaw mechanism generically predicts a cosmic-string gravitational wave background that future space missions could detect.
Probing non-unitarity of the PMNS matrix in P2SO and comparison with DUNE
hep-ph 2026-03 conditional novelty 5.0 of 10

Projected GLoBES sensitivities show DUNE constrains the non-unitarity parameters α11 and |α21| better, while P2SO wins on α33 (and marginally α22); non-unitarity also distorts mass-hierarchy, octant, and CP-violation ...
Dark Matter from Split Seesaw
hep-ph 2010-06 conditional novelty 5.0 of 10

Splitting the right-handed neutrino masses across an extra dimension lets one keV-scale sterile neutrino serve as dark matter while two heavier ones drive leptogenesis, all without breaking the seesaw formula for ligh...

Show 2 more citing papers

The minimal seesaw and leptogenesis models
hep-ph 2020-08 accept novelty 3.0 of 10

A comprehensive review of the two-right-handed-neutrino seesaw and its leptogenesis, organizing parametrizations, texture zeros, flavor symmetries and CP-violation predictions against current neutrino oscillation data.
Theory of Neutrinos: A White Paper
hep-ph 2005-10 accept novelty 2.0 of 10

The full theory volume of the 2004 APS neutrino study, surveying seesaw models, leptogenesis, and the experiments that would discriminate among them, frozen at January 2005.

How the literature uses it

31 arXiv papers cite this in 32 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 · 19 sentences without a confident label

Cites it as support 3 papers

This complies with the fact that successful leptogenesis in the seesaw model does require two right-handed neutrinos, but not necessarily more [ref] (see also [ref] ).

Minimal Seesaw Model with a Discrete Heavy-Neutrino Exchange Symmetry · Introduction: Seeking the most minimal realization of the type-I seesaw model · 0.99
This observation allows us to conclude that our scenario is compatible with the concept of leptogenesis from low-energy $CP$ violation [ref] .

Type-I Seesaw as the Common Origin of Neutrino Mass, Baryon Asymmetry, and the Electroweak Scale · Numerical parameter scan · 0.98
Likewise, leptogenesis calls for two right-handed neutrinos, but not necessarily more [ref] .

Perturbed Yukawa Textures in the Minimal Seesaw Model · Intro: Possible lessons from measuring leptonic CP violation? · 0.96

Cites it as background 9 papers

In this paper, we consider multiple texture zeroes of $M_ν$ [ref] as well as symmetries like the $μ-τ$ exchange [ref] and $S_3$ permutation [ref] , which predict certain relations between the elements of $M_ν$.

Texture zeroes and discrete flavor symmetries in light and heavy Majorana neutrino mass matrices: a bottom-up approach · Introduction · 0.90
The minimal seesaw scenario is a simplified version of the canonical seesaw mechanism which contains only two right-handed neutrino fields [ref] and thus involves only 11 original flavor parameters (i.e., 2 heavy neutrino masses, 6 active-sterile flavor mixing angles and 3 independent CP-violating phases [ref] ).

Confronting the seesaw mechanism with neutrino oscillations: a general and explicit analytical bridge · Results for the minimal seesaw scenario · 0.97
Seeking a potential connection between low-energy CP violation and leptogenesis has been a subject of intense investigation for over two decades (e.g., [ref] ).

Leptogenesis from the Dirac CP-violating phase in the minimal left-right symmetric model · Introduction · 0.96

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