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- W3033722802 abstract "In a class of gauged $U(1)$ extended Standard Models (SMs), the breaking of the $U(1)$ symmetry is not only a source for Majorana masses of right-handed (RH) neutrinos crucial for the seesaw mechanism, but also a source of stochastic gravitational wave (GW) background. Such $U(1)$ extended models are well-motivated from the viewpoint of grand unification. In this paper, we discuss a successful ultraviolet completion of a $U(1)$ extended SM by an $SO(10)$ grand unified model through an intermediate step of $SU(5) times U(1)$ unification. With a parameter set that is compatible with the $SO(10)$ grand unification, we find that a first-order phase transition associated with the $U(1)$ symmetry breaking can be strong enough to generate GWs with a detectable size of amplitude. We also find that the resultant GW amplitude reduces and its peak frequency becomes higher as the RH neutrino masses increase." @default.
- W3033722802 created "2020-06-12" @default.
- W3033722802 creator A5003062407 @default.
- W3033722802 creator A5023007450 @default.
- W3033722802 creator A5027560677 @default.
- W3033722802 date "2021-01-21" @default.
- W3033722802 modified "2023-10-17" @default.
- W3033722802 title "Gravitational waves from breaking of an extra <i>U</i>(1) in <i>SO</i>(10) grand unification" @default.
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- W3033722802 doi "https://doi.org/10.1093/ptep/ptab003" @default.
- W3033722802 hasPublicationYear "2021" @default.
- W3033722802 type Work @default.
- W3033722802 sameAs 3033722802 @default.