190 citations · 1.5k across the 39 of their papers we have counts for
3 papers · 1 filter
Why have supersymmetric particles not been observed?
Fuminobu Takahashi, Tsutomu T. Yanagida
If low-energy supersymmetry is the solution to the hierarchy problem, it is a puzzle why supersymmetric particles have not been observed experimentally to date. We show that supers…
Number-Theory Dark Matter
Kazunori Nakayama, Fuminobu Takahashi, Tsutomu T. Yanagida
We propose that the stability of dark matter is ensured by a discrete subgroup of the U(1)B-L gauge symmetry, Z_2(B-L). We introduce a set of chiral fermions charged under the U(1)…
Strong dynamics at the Planck scale as a solution to the cosmological moduli problem
Fuminobu Takahashi, Tsutomu T. Yanagida
We argue that strong dynamics at the Planck scale can solve the cosmological moduli problem. We discuss its implications for inflation models, and find that a certain type of multi…