91 citations · 865 across the 52 of their papers we have counts for
52 papers
On radiative corrections to lepton number violating processes
Takehiko Asaka, Hiroyuki Ishida, Kazuki Tanaka
We consider the minimal model of the seesaw mechanism by introducing two right-handed neutrinos, whose masses are comparable to the electroweak scale. This framework is attractive,…
Dynamical realization of the small field inflation of Coleman-Weinberg type in the post supercooled universe
He-Xu Zhang, Hiroyuki Ishida, Shinya Matsuzaki
The small field inflation (SFI) of Coleman-Weinberg (CW) type suffers from precise tuning of the initial inflaton field value to be away from the true vacuum one. We propose a dyna…
QCD preheating: New frontier of baryogenesis
Xin-Ru Wang, Jin-Yang Li, Seishi Enomoto +2
We find that QCD can create the cosmological matter abundance via out-of-equilibrium processes during the QCD phase transition, that is what we call the QCD preheating, where the d…
QCD knows new quarks
Chuan-Xin Cui, Hiroyuki Ishida, Mamiya Kawaguchi +3
We find that a big gap between indicators for the breaking strengths of the global chiral SU(2) and U(1) axial symmetries in QCD of the Standard Model (SM) can be interpreted as a…
Probing an intrinsically flavorful ALP via tau-lepton flavor physics
Chuan-Xin Cui, Hiroyuki Ishida, Shinya Matsuzaki +1
Any axionlike particle (ALP) intrinsically possesses flavorful couplings to the standard model (SM) fermions arising as a consequence of the right-handed flavor rotation within the…
Peccei-Quinn Symmetry Breaking via Asymptotically Safe Dynamical Scalegenesis: A Walking Axicolor and Axion
Hiroyuki Ishida, Shinya Matsuzaki, Xiao-Chang Peng
Pecci-Quinn (PQ) symmetry breaking by perturbative dynamics would suffer from a hierarchy problem, just like the electroweak symmetry breaking in the standard model. The dynamics o…