335 citations · 980 across the 8 of their papers we have counts for
8 papers
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…
(Non-)Abelian discrete anomalies
Takeshi Araki, Tatsuo Kobayashi, Jisuke Kubo +3
We derive anomaly constraints for Abelian and non-Abelian discrete symmetries using the path integral approach. We survey anomalies of discrete symmetries in heterotic orbifolds an…
The Heterotic Road to the MSSM with R parity
Oleg Lebedev, Hans Peter Nilles, Stuart Raby +4
In a previous paper, referred to as a "Mini-Landscape" search, we explored a "fertile patch" of the heterotic landscape based on a Z6-II orbifold with SO(10) and E6 local GUT struc…
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…