Natural seesaw and leptogenesis from hybrid of high-scale type I and TeV-scale inverse
Sign Up to like & getrecommendations! Published in 2019 at "Journal of High Energy Physics"
DOI: 10.1007/jhep04(2019)029
Abstract: A bstractWe develop an extension of the basic inverse seesaw model which addresses simultaneously two of its drawbacks, namely, the lack of explanation of the tiny Majorana mass term μ for the TeV-scale singlet fermions… read more here.
Keywords: leptogenesis; tev scale; high scale; natural seesaw ... See more keywords
Hot leptogenesis
Sign Up to like & getrecommendations! Published in 2024 at "Journal of High Energy Physics"
DOI: 10.1007/jhep05(2025)082
Abstract: We investigate a class of leptogenesis scenarios in which the sector containing the lightest right-handed neutrino establishes kinetic equilibrium at a temperature TN1\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ {T}_{N_1} $$\end{document} >… read more here.
Keywords: leptogenesis; equilibrium; hot leptogenesis; usepackage ... See more keywords
Leptogenesis assisted by scalar decays
Sign Up to like & getrecommendations! Published in 2024 at "Journal of High Energy Physics"
DOI: 10.1007/jhep07(2025)053
Abstract: We present a pragmatic approach to lower down the mass scale of right-handed neutrinos in leptogenesis by introducing a scalar decaying to right-handed neutrinos. The key point of our proposal is that the out-of-equilibrium decays… read more here.
Keywords: right handed; leptogenesis assisted; assisted scalar; leptogenesis ... See more keywords
Leptogenesis from a U(1)D resonance
Sign Up to like & getrecommendations! Published in 2020 at "Journal of High Energy Physics"
DOI: 10.1007/jhep08(2020)095
Abstract: Abstract We propose a novel mechanism to realize leptogenesis through the Breit- Wigner resonance of a dark U(1)D gauge boson ZD , which mediates lepton number vi- olating annihilations of dark matter (DM) in the… read more here.
Keywords: resonance; leptogenesis; leptogenesis resonance;
Resonant leptogenesis in (2,2) inverse see-saw realisation
Sign Up to like & getrecommendations! Published in 2022 at "Nuclear Physics B"
DOI: 10.1016/j.nuclphysb.2022.115780
Abstract: Tripurari Srivastava‡ Department of Physics, DIT University Dehradun, Uttarakhand-248009, India Abstract In this present work we uphold the standard model (SM) augmented with two right-handed (RH) neutrinos along with two singlet neutral fermions to generate… read more here.
Keywords: leptogenesis; physics; resonant leptogenesis; see saw ... See more keywords
Low-scale leptogenesis assisted by a real scalar singlet
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2019/03/037
Abstract: Standard thermal leptogenesis in the type-I seesaw model requires very heavy right-handed neutrinos (RHNs). This makes it hard to probe this scenario experimentally and results in large radiative corrections to the Higgs boson mass. In… read more here.
Keywords: scalar singlet; leptogenesis; real scalar; low scale ... See more keywords
MeV scale model of SIMP dark matter, neutrino mass and leptogenesis
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2020/03/027
Abstract: We consider a simple extension of the Standard Model with two singlet scalar fields and three heavy right-handed neutrinos. One of the scalar fields serves as an MeV scale dark matter and its stability is… read more here.
Keywords: leptogenesis; matter; dark matter; mev scale ... See more keywords
Mirror Dirac leptogenesis
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2020/03/036
Abstract: We consider an interesting scenario, based on the existence of a mirror world, in which light Dirac neutrinos are generated from a seesaw mechanism and leptogenesis occurs at high scale without violating lepton number. Since… read more here.
Keywords: leptogenesis; mirror dirac; baryon; dirac leptogenesis ... See more keywords
Probing leptogenesis at LISA: a Fisher analysis
Sign Up to like & getrecommendations! Published in 2025 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2025/08/095
Abstract: In https://doi.org/10.1088/1475-7516/2024/11/051JCAP11(2024)051, we discussed how different regimes (flavoured) of leptogenesis can be probed through a “tomographic” approach using primordial gravitational waves. By examining the theory's parameter space, we identified regions where right-handed neutrino mass-dependent non-standard… read more here.
Keywords: analysis; gravitational waves; probing leptogenesis; leptogenesis ... See more keywords
Two-component dark matter and low scale thermal Leptogenesis
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DOI: 10.1088/1475-7516/2025/09/032
Abstract: The observable cosmos exhibits sizable baryon asymmetry, small active neutrino masses, and the presence of dark matter (DM). To address these phenomena together, we propose a two component DM scenario in an extension of Scotogenic… read more here.
Keywords: two component; asymmetry; dark matter; leptogenesis ... See more keywords
Tribrid inflation, type II leptogenesis, and observable gravitational waves in supersymmetric SU(3) c × SU(2) L × SU(2) R × U(1) B-L
Sign Up to like & getrecommendations! Published in 2025 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2025/10/019
Abstract: We present a concrete realization of tribrid inflation within the framework of the gauge group SU(3) c × SU(2) L × SU(2) R × U(1) B-L . In this model, inflation is driven by the… read more here.
Keywords: gravitational waves; inflation; leptogenesis; cosmology ... See more keywords