335 citations · 980 across the 8 of their papers we have counts for
5 papers · 1 filter
Unified origin of baryons and dark matter
Ryuichiro Kitano, Hitoshi Murayama, Michael Ratz
We investigate the possibility that both the baryon asymmetry of the universe and the observed cold dark matter density are generated by decays of a heavy scalar field which domina…
Running minimal flavor violation
Paride Paradisi, Michael Ratz, Roland Schieren +1
We consider the flavor structure of the minimal supersymmetric standard model (MSSM) in the framework of `minimal flavor violation' (MFV). We show that, if one imposes the MFV stru…
Gauged Discrete Symmetries and Proton Stability
Rabindra N. Mohapatra, Michael Ratz
We discuss the results of a search for anomaly free Abelian Z_N discrete symmetries that lead to automatic R-parity conservation and prevents dangerous higher-dimensional proton de…
Seesaw Neutrinos from the Heterotic String
Wilfried Buchmuller, Koichi Hamaguchi, Oleg Lebedev +2
We study the possibility of realizing the neutrino seesaw mechanism in the E8XE8 heterotic string. In particular, we consider its Z_6 orbifold compactifications leading to the supe…
Gravitino and Goldstino at Colliders
Wilfried Buchmuller, Koichi Hamaguchi, Michael Ratz +1
We consider theories with spontaneously broken global or local supersymmetry where the pseudo-goldstino or the gravitino is the lightest superparticle (LSP). Assuming that the long…