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Title: Lepton flavor violation and {theta}{sub 13} in minimal resonant leptogenesis

Abstract

We study the impact of minimal nonsupersymmetric models of resonant leptogenesis on charged-lepton flavor violation and the neutrino-mixing angle {theta}{sub 13}. Possible low-scale flavor realizations of resonant {tau}-, {mu}- and e-leptogenesis provide very distinct and predictive frameworks to explain the observed baryon asymmetry in the Universe by sphaleron conversion of an individual {tau}-, {mu}- and e-lepton-number asymmetry which gets resonantly enhanced via out-of-equilibrium decays of nearly degenerate heavy Majorana neutrinos. Based on approximate flavor symmetries, we construct viable scenarios of resonant {tau}-, {mu}- and e-leptogenesis compatible with universal right-handed neutrino masses at the grand unified theory scale, where the required heavy-neutrino mass splittings are generated radiatively. The heavy Majorana neutrinos in such scenarios can be as light as 100 GeV and their couplings to two of the charged leptons may be large. In particular, we explicitly demonstrate the compelling role that the three heavy Majorana neutrinos play, in order to obtain successful leptogenesis and experimentally testable rates for lepton-flavor violating processes, such as {mu}{yields}e{gamma} and {mu}{yields}e conversion in nuclei.

Authors:
;  [1]
  1. School of Physics and Astronomy, University of Manchester, Manchester M13 9PL (United Kingdom)
Publication Date:
OSTI Identifier:
21537762
Resource Type:
Journal Article
Journal Name:
Physical Review. D, Particles Fields
Additional Journal Information:
Journal Volume: 83; Journal Issue: 7; Other Information: DOI: 10.1103/PhysRevD.83.076007; (c) 2011 American Institute of Physics; Journal ID: ISSN 0556-2821
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; APPROXIMATIONS; ASYMMETRY; BARYONS; CONVERSION; COUPLING; EQUILIBRIUM; FLAVOR MODEL; GEV RANGE 100-1000; GRAND UNIFIED THEORY; LEPTON NUMBER; LEPTONS; MAJORANA THEORY; MASS; NEUTRINOS; PARTICLE DECAY; PARTICLE PRODUCTION; SYMMETRY; UNIVERSE; WEINBERG ANGLE; CALCULATION METHODS; COMPOSITE MODELS; DECAY; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; FIELD THEORIES; GEV RANGE; HADRONS; MASSLESS PARTICLES; MATHEMATICAL MODELS; PARTICLE MODELS; QUANTUM FIELD THEORY; QUARK MODEL; UNIFIED GAUGE MODELS

Citation Formats

Deppisch, Frank F, and Pilaftsis, Apostolos. Lepton flavor violation and {theta}{sub 13} in minimal resonant leptogenesis. United States: N. p., 2011. Web. doi:10.1103/PHYSREVD.83.076007.
Deppisch, Frank F, & Pilaftsis, Apostolos. Lepton flavor violation and {theta}{sub 13} in minimal resonant leptogenesis. United States. doi:10.1103/PHYSREVD.83.076007.
Deppisch, Frank F, and Pilaftsis, Apostolos. Fri . "Lepton flavor violation and {theta}{sub 13} in minimal resonant leptogenesis". United States. doi:10.1103/PHYSREVD.83.076007.
@article{osti_21537762,
title = {Lepton flavor violation and {theta}{sub 13} in minimal resonant leptogenesis},
author = {Deppisch, Frank F and Pilaftsis, Apostolos},
abstractNote = {We study the impact of minimal nonsupersymmetric models of resonant leptogenesis on charged-lepton flavor violation and the neutrino-mixing angle {theta}{sub 13}. Possible low-scale flavor realizations of resonant {tau}-, {mu}- and e-leptogenesis provide very distinct and predictive frameworks to explain the observed baryon asymmetry in the Universe by sphaleron conversion of an individual {tau}-, {mu}- and e-lepton-number asymmetry which gets resonantly enhanced via out-of-equilibrium decays of nearly degenerate heavy Majorana neutrinos. Based on approximate flavor symmetries, we construct viable scenarios of resonant {tau}-, {mu}- and e-leptogenesis compatible with universal right-handed neutrino masses at the grand unified theory scale, where the required heavy-neutrino mass splittings are generated radiatively. The heavy Majorana neutrinos in such scenarios can be as light as 100 GeV and their couplings to two of the charged leptons may be large. In particular, we explicitly demonstrate the compelling role that the three heavy Majorana neutrinos play, in order to obtain successful leptogenesis and experimentally testable rates for lepton-flavor violating processes, such as {mu}{yields}e{gamma} and {mu}{yields}e conversion in nuclei.},
doi = {10.1103/PHYSREVD.83.076007},
journal = {Physical Review. D, Particles Fields},
issn = {0556-2821},
number = 7,
volume = 83,
place = {United States},
year = {2011},
month = {4}
}