Testing the Seesaw Mechanism and Leptogenesis with Gravitational Waves
Abstract
We present the possibility that the seesaw mechanism with thermal leptogenesis can be tested using the stochastic gravitational background. Achieving neutrino masses consistent with atmospheric and solar neutrino data, while avoiding nonperturbative couplings, requires right handed neutrinos lighter than the typical scale of grand unification. This scale separation suggests a symmetry protecting the right-handed neutrinos from getting a mass. Thermal leptogenesis would then require that such a symmetry be broken below the reheating temperature. We enumerate all such possible symmetries consistent with these minimal assumptions and their corresponding defects, finding that in many cases, gravitational waves from the network of cosmic strings should be detectable. Estimating the predicted gravitational wave background, we find that future space-borne missions could probe the entire range relevant for thermal leptogenesis.
- Authors:
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC); National Science Foundation (NSF); Japan Society for the Promotion of Science (JSPS)
- OSTI Identifier:
- 1595510
- Alternate Identifier(s):
- OSTI ID: 1616096
- Grant/Contract Number:
- AC02-05CH11231; PHY-1638509
- Resource Type:
- Published Article
- Journal Name:
- Physical Review Letters
- Additional Journal Information:
- Journal Name: Physical Review Letters Journal Volume: 124 Journal Issue: 4; Journal ID: ISSN 0031-9007
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 79 ASTRONOMY AND ASTROPHYSICS
Citation Formats
Dror, Jeff A., Hiramatsu, Takashi, Kohri, Kazunori, Murayama, Hitoshi, and White, Graham. Testing the Seesaw Mechanism and Leptogenesis with Gravitational Waves. United States: N. p., 2020.
Web. doi:10.1103/PhysRevLett.124.041804.
Dror, Jeff A., Hiramatsu, Takashi, Kohri, Kazunori, Murayama, Hitoshi, & White, Graham. Testing the Seesaw Mechanism and Leptogenesis with Gravitational Waves. United States. doi:10.1103/PhysRevLett.124.041804.
Dror, Jeff A., Hiramatsu, Takashi, Kohri, Kazunori, Murayama, Hitoshi, and White, Graham. Tue .
"Testing the Seesaw Mechanism and Leptogenesis with Gravitational Waves". United States. doi:10.1103/PhysRevLett.124.041804.
@article{osti_1595510,
title = {Testing the Seesaw Mechanism and Leptogenesis with Gravitational Waves},
author = {Dror, Jeff A. and Hiramatsu, Takashi and Kohri, Kazunori and Murayama, Hitoshi and White, Graham},
abstractNote = {We present the possibility that the seesaw mechanism with thermal leptogenesis can be tested using the stochastic gravitational background. Achieving neutrino masses consistent with atmospheric and solar neutrino data, while avoiding nonperturbative couplings, requires right handed neutrinos lighter than the typical scale of grand unification. This scale separation suggests a symmetry protecting the right-handed neutrinos from getting a mass. Thermal leptogenesis would then require that such a symmetry be broken below the reheating temperature. We enumerate all such possible symmetries consistent with these minimal assumptions and their corresponding defects, finding that in many cases, gravitational waves from the network of cosmic strings should be detectable. Estimating the predicted gravitational wave background, we find that future space-borne missions could probe the entire range relevant for thermal leptogenesis.},
doi = {10.1103/PhysRevLett.124.041804},
journal = {Physical Review Letters},
number = 4,
volume = 124,
place = {United States},
year = {2020},
month = {1}
}
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DOI: 10.1103/PhysRevLett.124.041804
DOI: 10.1103/PhysRevLett.124.041804
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Works referencing / citing this record:
Testing the Seesaw Mechanism and Leptogenesis with Gravitational Waves
text, January 2020
- Dror, Jeff A.; Hiramatsu, Takashi; Kohri, Kazunori
- Deutsches Elektronen-Synchrotron, DESY, Hamburg