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Title: Three-flavored nonresonant leptogenesis at intermediate scales

Abstract

Leptogenesis can successfully explain the matter-antimatter asymmetry via out-of-equilibrium decays of heavy Majorana neutrinos in the early Universe. In this article we focus on non-resonant thermal leptogenesis and we study the possibility of lowering its scale through flavour effects in an exhaustive exploration of the model parameter space. We numerically solve the density matrix equations for one and two decaying heavy Majorana neutrinos and present the level of fine-tuning of the light neutrino masses within these scenarios. We demonstrate that the scale of thermal leptogenesis may be as low as $10^6$ GeV.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR) (SC-21)
OSTI Identifier:
1461914
Alternate Identifier(s):
OSTI ID: 1436701
Report Number(s):
[arXiv:1804.05066; IPPP-18-25; FERMILAB-PUB-18-100-T; IPMU18-0062; SISSA-17-2018-FISI]
[Journal ID: ISSN 2470-0010; PRVDAQ; 015036]
Grant/Contract Number:  
[AC02-07CH11359]
Resource Type:
Published Article
Journal Name:
Physical Review D
Additional Journal Information:
[Journal Name: Physical Review D Journal Volume: 98 Journal Issue: 1]; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Moffat, K., Pascoli, S., Petcov, S. T., Schulz, H., and Turner, J. Three-flavored nonresonant leptogenesis at intermediate scales. United States: N. p., 2018. Web. doi:10.1103/PhysRevD.98.015036.
Moffat, K., Pascoli, S., Petcov, S. T., Schulz, H., & Turner, J. Three-flavored nonresonant leptogenesis at intermediate scales. United States. doi:10.1103/PhysRevD.98.015036.
Moffat, K., Pascoli, S., Petcov, S. T., Schulz, H., and Turner, J. Fri . "Three-flavored nonresonant leptogenesis at intermediate scales". United States. doi:10.1103/PhysRevD.98.015036.
@article{osti_1461914,
title = {Three-flavored nonresonant leptogenesis at intermediate scales},
author = {Moffat, K. and Pascoli, S. and Petcov, S. T. and Schulz, H. and Turner, J.},
abstractNote = {Leptogenesis can successfully explain the matter-antimatter asymmetry via out-of-equilibrium decays of heavy Majorana neutrinos in the early Universe. In this article we focus on non-resonant thermal leptogenesis and we study the possibility of lowering its scale through flavour effects in an exhaustive exploration of the model parameter space. We numerically solve the density matrix equations for one and two decaying heavy Majorana neutrinos and present the level of fine-tuning of the light neutrino masses within these scenarios. We demonstrate that the scale of thermal leptogenesis may be as low as $10^6$ GeV.},
doi = {10.1103/PhysRevD.98.015036},
journal = {Physical Review D},
number = [1],
volume = [98],
place = {United States},
year = {2018},
month = {7}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1103/PhysRevD.98.015036

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Cited by: 8 works
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