LAUSR

Natural seesaw and leptogenesis from hybrid of high-scale type I and TeV-scale inverse

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1 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

Leptogenesis from a U(1)D resonance

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1 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

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1 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

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0 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

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1 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

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0 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

Reconciling resonant leptogenesis and baryogenesis via neutrino oscillations

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0 Published in 2021 at "Physical Review D"

DOI: 10.1103/physrevd.104.055010

Abstract: Right-handed neutrinos offer an elegant solution to two well established phenomena beyond the Standard Model (SM)—masses and oscillations of neutrinos, as well as the baryon asymmetry of the Universe. It is also a minimalistic solution… read more here.

Keywords: leptogenesis; low scale; resonant leptogenesis; leptogenesis baryogenesis ... See more keywords

Dark sector assisted low scale leptogenesis from three body decay

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3 Published in 2022 at "Physical Review D"

DOI: 10.1103/physrevd.105.015015

Abstract: We study the possibility of realising tree level leptogenesis from three body decay, dark matter and neutrino mass in a minimal framework. We propose a first of its kind model to implement the idea of… read more here.

Keywords: leptogenesis; leptogenesis three; three body; body decay ... See more keywords

Implications of residual CP symmetry for leptogenesis in a model with two right-handed neutrinos

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1 Published in 2017 at "Physical Review D"

DOI: 10.1103/physrevd.96.075005

Abstract: We analyze the interplay between leptogenesis and residual symmetry in the framework of two right-handed neutrino model. Working in the flavor basis, we show that all the leptogenesis CP asymmetries are vanishing for the case… read more here.

Keywords: leptogenesis; two right; residual symmetry; symmetry ... See more keywords

TeV-scale neutrino mass generation, minimal inelastic dark matter, and high scale leptogenesis

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0 Published in 2019 at "Physical Review D"

DOI: 10.1103/physrevd.99.015025

Abstract: The seesaw and leptogenesis commonly depend on the masses of same particles, and thus are both realized at the same scale. In this work, we demonstrate a new possibility to realize a TeV-scale neutrino seesaw… read more here.

Keywords: leptogenesis; dark matter; tev scale; scale ... See more keywords