6 papers
Two component pseudo-Nambu-Goldstone-boson dark matter
Riasat Sheikh, Takashi Toma, Koji Tsumura
We study a two-component pseudo-Nambu-Goldstone-boson (pNGB) dark matter (DM) model motivated by boosted dark matter (BDM). The model is based on a complex scalar field charged und…
Pseudo-Nambu-Goldstone-boson Dark Matter from Three Complex Scalars
Riasat Sheikh, Takashi Toma, Koji Tsumura
This study explores a dark matter model in which a pseudo-Nambu-Goldstone boson arises as a viable dark matter candidate from the spontaneous and soft breaking of global $\mathrm{U…
Nambu-Goldstone Modes in Magnetized Extra Dimensions
Takuya Hirose, Hajime Otsuka, Koji Tsumura +1
We consider a gauge theory on with background magnetic fluxes. We show that a theory including arbitrary fluxes can always be studied in a theory involving o…
New Constraints on Gauged U(1) Models via Mixing
Kento Asai, Coh Miyao, Shohei Okawa +1
It is known that the model based on U(1) gauge symmetry can explain not only the discrepancy between the measured value of muon and the theoretical prediction, bu…
A model of pseudo-Nambu-Goldstone dark matter with two complex scalars
Tomohiro Abe, Yu Hamada, Koji Tsumura
Pseudo-Nambu-Goldstone (pNG) dark matter (DM) is a promising DM candidate and able to explain the measured DM abundance by the thermal freeze-out mechanism evading the stringent bo…
Pseudo-Nambu-Goldstone Dark Matter in Grand Unification
Cheng-Wei Chiang, Koji Tsumura, Yoshiki Uchida +1
We propose a grand unified theory (GUT) pseudo-Nambu-Goldstone boson (pNGB) dark matter (DM) model based on gauge symmetry. In the GUT model, the Standard Model (SM) gauge…