Journal
PHYSICAL REVIEW D
Volume 99, Issue 9, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.99.095039
Keywords
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Funding
- U.S. DOE [DE-SC0012447]
- KAKENHI [19K03860, 19H05091]
- Grants-in-Aid for Scientific Research [19K03860, 19H05091] Funding Source: KAKEN
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An additional U(1) gauge interaction is one of the promising extensions of the standard model of particle physics. Among others, the U(1)(B-L) gauge symmetry is particularly interesting because it addresses the origin of Majorana masses of right-handed neutrinos, which naturally leads to tiny light neutrino masses through the seesaw mechanism. We show that, based on the minimal U(1)(B-L) model, the symmetry breaking of the extra U(1) gauge symmetry with its minimal Higgs sector in the early universe can exhibit the first-order phase transition and hence generate a large enough amplitude of stochastic gravitational wave radiation that is detectable in future experiments.
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