89 citations · 205 across the 10 of their papers we have counts for
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Capture of Electroweak Multiplet Dark Matter in Neutron Stars
Motoko Fujiwara, Koichi Hamaguchi, Natsumi Nagata +1
If dark matter has a sizable scattering cross section with nucleons, it can efficiently be captured by a neutron star. Its energy is then transferred to the neutron star as heat th…
Gamma-ray line from electroweakly interacting non-abelian spin-1 dark matter
Tomohiro Abe, Motoko Fujiwara, Junji Hisano +1
We study gamma-ray line signatures from electroweakly interacting non-abelian spin-1 dark matter (DM). In this model, -odd spin-1 particles including a DM candidate have the S…
Vanishing or non-vanishing rainbow? Reduction formulas of electric dipole moment
Motoko Fujiwara, Junji Hisano, Takashi Toma
In this paper, we derive a simplified formula of electric dipole moments (EDMs) of a fermion. In the Standard Model, it is well-known that non-trivial cancellations between some ra…
Electric dipole moments in the extended scotogenic models
Motoko Fujiwara, Junji Hisano, Chihiro Kanai +1
Electric dipole moments (EDMs) of charged leptons arise from a new source of CP violation in the lepton sector. In this paper, we calculate the EDMs of the charged leptons in the m…
A model of electroweakly interacting non-abelian vector dark matter
Tomohiro Abe, Motoko Fujiwara, Junji Hisano +1
We propose an electroweakly interacting spin-1 dark matter (DM) model. The electroweak gauge symmetry, SU(2)U(1), is extended into SU(2)SU(2)SU(…
Maximum value of the spin-independent cross section in the THDM+a
Tomohiro Abe, Motoko Fujiwara, Junji Hisano +1
We investigate the maximum value of the spin-independent cross section () in a dark matter (DM) model called the two-Higgs doublet model + a (THDM+a). This model can e…
Loop corrections to dark matter direct detection in a pseudoscalar mediator dark matter model
Tomohiro Abe, Motoko Fujiwara, Junji Hisano
If dark matter (DM) is a fermion and its interactions with the standard model particles are mediated by pseudoscalar particles, the tree-level amplitude for the DM-nucleon elastic…