431 citations · 2.2k across the 28 of their papers we have counts for
28 papers
Gravitational Properties of the Monopole Bag
Yu Komiya, Fumihiro Takayama
Axionic cosmologies constitute a class of models with phenomenologically rich symmetry breaking in the early universe. In the case where monopoles are present in such a background,…
Study of lepton flavor violation in flavor symmetric models for lepton sector
Tatsuo Kobayashi, Yuji Omura, Fumihiro Takayama +1
Flavor symmetric model is one of the attractive Beyond Standard Models (BSMs) to reveal the flavor structure of the Standard Model (SM). A lot of efforts have been put into the mod…
Revisiting Discrete Dark Matter Model:θ_{13}\neq0 and ν_{R} Dark Matter
Yuta Hamada, Tatsuo Kobayashi, Atsushi Ogasahara +3
We revisit the discrete dark matter model with flavor symmetry originally introduced by M.Hirsch {\it et.al}. We show that radiative corrections can lead to non-zero …
Probing Gravitino Dark Matter with PAMELA and Fermi
Wilfried Buchmüller, Alejandro Ibarra, Tetsuo Shindou +2
We analyze the cosmic-ray signatures of decaying gravitino dark matter in a model independent way based on an operator analysis. Thermal leptogenesis and universal boundary conditi…
Goldilocks Supersymmetry: Simultaneous Solution to the Dark Matter and Flavor Problems of Supersymmetry
Jonathan L. Feng, Bryan T. Smith, Fumihiro Takayama
Neutralino dark matter is well motivated, but also suffers from two shortcomings: it requires gravity-mediated supersymmetry breaking, which generically violates flavor constraints…
Extremely Long-Lived Charged Massive Particles as A Probe for Reheating of the Universe
Fumihiro Takayama
We discuss the impact of charged massive particle big bang nucleosynthesis(CBBN) to explore the nature of the reheating of the Universe in the case that a new extremely long-lived…