6 citations · 10 across the 2 of their papers we have counts for
5 papers
A non-invertible Fibonacci selection rule for two-Higgs-doublet models
Yu Hamada
We study two-Higgs-doublet models, extensions of the Standard Model (SM) containing two Higgs doublets rather than one. Tree-level Higgs-mediated interactions that change quark or…
Higgs boson production at colliders
Yu Hamada, Ryuichiro Kitano, Ryutaro Matsudo +4
We study Higgs boson production at colliders at high energy. Since both initial-state particles are positively charged, there is no boson fusion at the leading order,…
Q-Balls in the presence of attractive force
Yu Hamada, Kiyoharu Kawana, TaeHun Kim +1
Q-balls are non-topological solitons in field theories whose stability is typically guaranteed by the existence of a global conserved charge. A classic realization is the Friedberg…
Gravitational wave spectrum from expanding string loops on domain walls: Implication for nanohertz pulsar timing array signal
Yu Hamada, Wakutaka Nakano
We analytically calculate the spectrum of stochastic gravitational waves (GWs) emitted by expanding string loops on domain walls in the scenario where domain walls decay by nucleat…
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…