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Can Decaying Particles Raise the Upperbound on the Peccei-Quinn Scale?
M. Kawasaki, T. Moroi, T. Yanagida
We have reexamine the effect of entropy production on the cosmic axion density and find that the Peccei-Quinn scale larger than about ~GeV is not allowed even if lar…
Suppression of Proton Decay in the Missing-Partner Model for Supersymmetric SU(5) GUT
J. Hisano
The Peccei-Quinn symmetric extension of the missing-partner model in the supersymmetric SU(5) grand unified model is consistent with the observed stability of the proton, even in t…
A viable one-family technicolor model
N. Kitazawa, T. Yanagida
We construct a one-family technicolor model which is consistent with the precision experiments on the electroweak interaction. The Majorana mass of the right-handed techni-neutrino…
Dynamical Models for Light Higgs Doublets in Supersymmetric Grand Unified Theories
T. Hotta, K. -I. Izawa, T. Yanagida
We consider a supersymmetric hypercolor gauge theory with six flavors of quarks interacting strongly at the grand unification scale. This model solves the most serious problem -- d…
QCD-like Hidden Sector Models without the Polonyi Problem
K. -I. Izawa, T. Yanagida
QCD-like hidden sector models of supersymmetry breaking are considered which do not suffer from a cosmological problem due to the Polonyi field. Avoidance of a light gluino leads t…
Lepton-Flavor Violation in the Supersymmetric Standard Model with Seesaw-Induced Neutrino Masses
J. Hisano, T. Moroi, K. Tobe +2
We examine the lepton-flavor violation caused by a Yukawa coupling matrix for right-handed neutrinos in the supersymmetric standard model. We stress that decay rates for…