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- W2793500144 abstract "In this review article, we consider a dark matter scenario in the context of the minimal extension of the Standard Model (SM) with a $B-L$ (baryon number minus lepton number) gauge symmetry, where three right-handed neutrinos with a $B-L$ charge $-1$ and a $B-L$ Higgs field with a $B-L$ charge $+2$ are introduced to make the model anomaly-free and to break the $B-L$ gauge symmetry, respectively. The $B-L$ gauge symmetry breaking generates the Majorana masses for the right-handed neutrinos. We introduce a Z$_2$ symmetry to the model and assign an odd parity only for one right-handed neutrino, and hence the Z$_2$-odd right-handed neutrino is stable and the unique dark matter candidate in the model. The so-called minimal seesaw works with the other two right-handed neutrinos and reproduces the current neutrino oscillation data. We consider the case that the dark matter particle communicates with the SM particles through the $B-L$ gauge boson ($Z^{prime}_{B-L}$ boson), and obtain a lower bound on the $B-L$ gauge coupling ($alpha_{B-L}$) as a function of the $Z^{prime}_{B-L}$ boson mass ($m_{Z^{prime}}$) from the observed dark matter relic density. On the other hand, we interpret the recent LHC Run-2 results on the search for a boson resonance to an upper bound on $alpha_{B-L}$ as a function of $m_{Z^{prime}}$. These two constraints are complementary to narrow down an allowed parameter region for this $Z^{prime}$ portal dark matter scenario, leading to a lower mass bound of $m_{Z^{prime}} geq 3.9$ TeV." @default.
- W2793500144 created "2018-03-29" @default.
- W2793500144 creator A5055300218 @default.
- W2793500144 date "2018-03-19" @default.
- W2793500144 modified "2023-09-27" @default.
- W2793500144 title "$Z^prime$ portal dark matter in the minimal $B-L$ model" @default.
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