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Multicomponent dark matter in noncommutative $B-L$ gauge theory | | Cao H. Nam
; Duong Van Loi
; Le Xuan Thuy
; Phung Van Dong
; | | Date: |
1 Jun 2020 | | Abstract: | It is shown that for a higher weak isospin symmetry, $SU(P)_L$ with $Pgeq
3$, the baryon minus lepton charge $B-L$ neither commutes nor closes
algebraically with $SU(P)_L$ similar to the electric charge $Q$, which all lead
to a $SU(3)_Cotimes SU(P)_Lotimes U(1)_Xotimes U(1)_N$ gauge completion,
where $X$ and $N$ determine $Q$ and $B-L$, respectively. As a direct result,
the neutrinos obtain appropriate masses via a canonical seesaw. While the
version with $P=3$ supplies the schemes of single-component dark matter well
established in the literature, we prove in this work that the models with
$Pgeq 4$ provide the novel scenarios of multicomponent dark matter, which
contain simultaneously at least $P-2$ stable candidates, respectively. In this
setup, the multicomponet dark matter is nontrivially unified with normal matter
by gauge multiplets, and their stability is ensured by a residual gauge
symmetry which is a remnant of the gauge symmetry after spontaneous symmetry
breaking. The three versions with $P=4$ according to the new lepton electric
charges are detailedly investigated. The mass spectrum of the scalar sector is
diagonalized when the scale of the $U(1)_N$ breaking is much higher than that
of the usual 3-4-1 symmetry breaking. All the interactions of gauge bosons with
fermions and scalars are obtained. We figure out viable parameter regimes given
that the multicomponent dark matter satisfies the Planck and (in)direct
detection experiments. | | Source: | arXiv, 2006.0845 | | Services: | Forum | Review | PDF | Favorites | |
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