273 citations · 1.4k across the 54 of their papers we have counts for
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Ultraviolet Completion of a Composite Asymmetric Dark Matter Model with a Dark Photon Portal
Masahiro Ibe, Ayuki Kamada, Shin Kobayashi +2
Composite asymmetric dark matter scenarios naturally explain why the dark matter mass density is comparable with the visible matter mass density. Such scenarios generically require…
An X-ray spectroscopic search for dark matter and unidentified line signatures in the Perseus cluster with Hitomi
Takayuki Tamura, Andrew C. Fabian, Poshak Gandhi +14
We present results of a search for unidentified line emission and absorption signals in the 2-12keV energy band of spectra extracted from Perseus Cluster core region observations o…
Self-interacting dark matter with a vector mediator: kinetic mixing with U(1) gauge boson
Ayuki Kamada, Masaki Yamada, Tsutomu T. Yanagida
A spontaneously broken hidden U(1) gauge symmetry can explain both the dark matter stability and the observed relic abundance. In this framework, the light gauge boson can medi…
Decaying axinolike dark matter: Discriminative solution to small-scale issues
Kyu Jung Bae, Ayuki Kamada, Hee Jung Kim
The latest Lyman- forest data severely constrain the conventional warm dark matter solution to small-scale issues in the cold dark matter paradigm. It has been also reported tha…
Composite Asymmetric Dark Matter with a Dark Photon Portal
Masahiro Ibe, Ayuki Kamada, Shin Kobayashi +1
Asymmetric dark matter (ADM) is an attractive framework relating the observed baryon asymmetry of the Universe to the dark matter density. A composite particle in a new strong dyna…
Self-heating of Strongly Interacting Massive Particles
Ayuki Kamada, Hee Jung Kim, Hyungjin Kim
It was recently pointed out that semi-annihilating dark matter (DM) may experience a novel temperature evolution dubbed as self-heating. Exothermic semi-annihilation converts the D…
Self-interacting dark matter and muon in a gauged U model
Ayuki Kamada, Kunio Kaneta, Keisuke Yanagi +1
We construct a self-interacting dark matter model that could simultaneously explain the observed muon anomalous magnetic moment. It is based on a gauged U extensio…