89 citations · 205 across the 10 of their papers we have counts for
10 papers
Vortex Creep Heating in Neutron Stars
Motoko Fujiwara, Koichi Hamaguchi, Natsumi Nagata +1
Recent observations of old warm neutron stars suggest the presence of a heating source in these stars, requiring a paradigm beyond the standard neutron-star cooling theory. In this…
New description of the scaling evolution of the cosmological magneto-hydrodynamic system
Fumio Uchida, Motoko Fujiwara, Kohei Kamada +1
We present a new description of cosmological evolution of the primordial magnetic field under the condition that it is non-helical and its energy density is larger than the kinetic…
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…
LHC Dark Matter Working Group: Next-generation spin-0 dark matter models
Tomohiro Abe, Yoav Afik, Andreas Albert +50
Dark matter (DM) simplified models are by now commonly used by the ATLAS and CMS Collaborations to interpret searches for missing transverse energy (). The coher…
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…