408 citations · 5.6k across the 109 of their papers we have counts for
110 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…
Thermal Leptogenesis in the Minimal Gauged Model
Alessandro Granelli, Koichi Hamaguchi, Natsumi Nagata +2
We discuss the thermal leptogenesis mechanism within the minimal gauged U(1) model to explain the observed baryon asymmetry of the Universe (BAU). In such framework, th…
Revisiting Affleck-Dine Leptogenesis with light sleptons
Kazuki Enomoto, Koichi Hamaguchi, Kohei Kamada +1
We revisit the Affleck-Dine leptogenesis via the flat direction with a light slepton field. Although the light slepton field is favored in low-energy SUSY phenomenologies,…
Probing New Physics in the Vector-like Lepton Model by Lepton Electric Dipole Moments
Koichi Hamaguchi, Natsumi Nagata, Genta Osaki +1
We examine the lepton dipole moments in an extension of the Standard Model (SM), which contains vector-like leptons that couple only to the second-generation SM leptons. The model…
Report of the Topical Group on Physics Beyond the Standard Model at Energy Frontier for Snowmass 2021
Tulika Bose, Antonio Boveia, Caterina Doglioni +318
This is the Snowmass2021 Energy Frontier (EF) Beyond the Standard Model (BSM) report. It combines the EF topical group reports of EF08 (Model-specific explorations), EF09 (More gen…
Minimal Nambu-Goldstone Higgs Model in Supersymmetric SU(5) Revisited
Koichi Hamaguchi, Shihwen Hor, Natsumi Nagata
We revisit the minimal Nambu-Goldstone (NG) Higgs supersymmetric (SUSY) SU(5) grand unified model and study its phenomenological implications. The Higgs sector of the model possess…