228 citations · 2.6k across the 85 of their papers we have counts for
6 papers · 1 filter
Primordial Lepton Oscillations and Baryogenesis
Yuta Hamada, Ryuichiro Kitano
The baryon asymmetry of the Universe should have been produced after the inflation era. We consider the possibility that the asymmetry is generated by the flavor oscillations in th…
Meaning of the field dependence of the renormalization scale in Higgs inflation
Yuta Hamada, Hikaru Kawai, Yukari Nakanishi +1
We consider the prescription dependence of the Higgs effective potential under the presence of general nonminimal couplings. We evaluate the fermion loop correction to the effectiv…
Baryon asymmetry from primordial black holes
Yuta Hamada, Satoshi Iso
We propose a new scenario of the baryogenesis from primordial black holes (PBH). Assuming presence of microscopic baryon (or lepton) number violation and a CP violating operator su…
The reheating era leptogenesis in models with seesaw mechanism
Yuta Hamada, Koji Tsumura, Daiki Yasuhara
Observed baryon asymmetry can be achieved not only by the decay of right-handed neutrinos but also by the scattering processes in the reheating era. In the latter scenario, new phy…
Baryogenesis in false vacuum
Yuta Hamada, Masatoshi Yamada
The null result in the LHC may indicate that the standard model is not drastically modified up to very high scales such as the GUT/string scale. Having this in the mind, we suggest…
Models of LHC Diphoton Excesses Valid up to the Planck scale
Yuta Hamada, Hikaru Kawai, Kiyoharu Kawana +1
We discuss a possibility to explain the LHC diphoton excesses at GeV by the new scalar that couples to the gauge bosons through the loop of new massive particles with Stan…