Gravitational waves from the minimal gauged U(1)(B-L) model

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American Physical Society

An additional (U\left(1\right)) gauge interaction is one of the promising extensions of the standard model of particle physics. Among others, the (U\left(1{\right)}{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\left(1{\right)}{B-L}) model, the symmetry breaking of the extra (U\left(1\right)) 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.

1ST-ORDER PHASE-TRANSITION, B-L, RADIATION, VACUUM, SYMMETRY, Astronomy & Astrophysics, Physics, Particles & Fields, Physics
Hasegawa, T., Okada, N., & Seto, O. (2019). Gravitational waves from the minimal gauged U(1)B−L model. In Physical Review D (Vol. 99, Issue 9). American Physical Society (APS).