3 papers
hep-ph2025
Renormalization Group Running of the Minimal Leptophilic Dark Matter Model toward a UV Completion
Osamu Seto, Tetsuo Shindou, Takanao Tsuyuki
We study the renormalization group running of the coupling constants in a minimal leptophilic dark matter model in which a Standard Model singlet fermion, acting as the dark matter…
hep-ph2025
Smooth hybrid inflation in light of ACT DR6 data
Nobuchika Okada, Osamu Seto
Smooth hybrid inflation is a hybrid inflation model which is free from topological defects and predicts the density perturbation with the spectral index of about . We show th…
hep-ph2025
New rare meson decay constraints on a light vector in and the dark photon
Osamu Seto, Takashi Shimomura, Shinsuke Yoshida
We evaluate constraints from flavor changing rare meson decays to a light vector boson , followed by the decay of the on-shell into the SM fermions. The flavor changing meso…