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Title: Constraints on leptogenesis from a symmetry viewpoint

Abstract

It is shown that type I seesaw models based on the standard model Lagrangian extended with three heavy Majorana right-handed fields do not have leptogenesis in leading order, if the symmetries of mass matrices are also the residual symmetry of the Lagrangian. In particular, flavor models that lead to a mass-independent leptonic mixing have a vanishing leptogenesis CP asymmetry. Based on symmetry arguments, we prove that in these models the Dirac-neutrino Yukawa coupling combinations relevant for leptogenesis are diagonal in the physical basis where the charged leptons and heavy Majorana neutrinos are diagonal.

Authors:
 [1];  [2]
  1. Area Cientifica de Fisica, Instituto Superior de Engenharia de Lisboa, Rua Conselheiro Emidio Navarro 1, 1959-007 Lisboa (Portugal)
  2. Departamento de Fisica and Centro de Fisica Teorica de Particulas (CFTP), Instituto Superior Tecnico, Av. Rovisco Pais, 1049-001 Lisboa (Portugal)
Publication Date:
OSTI Identifier:
21409832
Resource Type:
Journal Article
Journal Name:
Physical Review. D, Particles Fields
Additional Journal Information:
Journal Volume: 81; Journal Issue: 5; Other Information: DOI: 10.1103/PhysRevD.81.053008; (c) 2010 The American Physical Society; Journal ID: ISSN 0556-2821
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ASYMMETRY; FLAVOR MODEL; LAGRANGIAN FUNCTION; MAJORANA THEORY; MASS; MIXING; NEUTRINOS; PARTICLE PRODUCTION; STANDARD MODEL; SYMMETRY; YUKAWA POTENTIAL; COMPOSITE MODELS; ELEMENTARY PARTICLES; FERMIONS; FIELD THEORIES; FUNCTIONS; GRAND UNIFIED THEORY; LEPTONS; MASSLESS PARTICLES; MATHEMATICAL MODELS; NUCLEAR POTENTIAL; PARTICLE MODELS; POTENTIALS; QUANTUM FIELD THEORY; QUARK MODEL; UNIFIED GAUGE MODELS

Citation Formats

Gonzalez Felipe, R, Departamento de Fisica and Centro de Fisica Teorica de Particulas, and Serodio, H. Constraints on leptogenesis from a symmetry viewpoint. United States: N. p., 2010. Web. doi:10.1103/PHYSREVD.81.053008.
Gonzalez Felipe, R, Departamento de Fisica and Centro de Fisica Teorica de Particulas, & Serodio, H. Constraints on leptogenesis from a symmetry viewpoint. United States. https://doi.org/10.1103/PHYSREVD.81.053008
Gonzalez Felipe, R, Departamento de Fisica and Centro de Fisica Teorica de Particulas, and Serodio, H. 2010. "Constraints on leptogenesis from a symmetry viewpoint". United States. https://doi.org/10.1103/PHYSREVD.81.053008.
@article{osti_21409832,
title = {Constraints on leptogenesis from a symmetry viewpoint},
author = {Gonzalez Felipe, R and Departamento de Fisica and Centro de Fisica Teorica de Particulas and Serodio, H},
abstractNote = {It is shown that type I seesaw models based on the standard model Lagrangian extended with three heavy Majorana right-handed fields do not have leptogenesis in leading order, if the symmetries of mass matrices are also the residual symmetry of the Lagrangian. In particular, flavor models that lead to a mass-independent leptonic mixing have a vanishing leptogenesis CP asymmetry. Based on symmetry arguments, we prove that in these models the Dirac-neutrino Yukawa coupling combinations relevant for leptogenesis are diagonal in the physical basis where the charged leptons and heavy Majorana neutrinos are diagonal.},
doi = {10.1103/PHYSREVD.81.053008},
url = {https://www.osti.gov/biblio/21409832}, journal = {Physical Review. D, Particles Fields},
issn = {0556-2821},
number = 5,
volume = 81,
place = {United States},
year = {Mon Mar 01 00:00:00 EST 2010},
month = {Mon Mar 01 00:00:00 EST 2010}
}