162 citations · 299 across the 8 of their papers we have counts for
7 papers · 1 filter
Anomaly-safe discrete groups
Mu-Chun Chen, Maximilian Fallbacher, Michael Ratz +2
We show that there is a class of finite groups, the so-called perfect groups, which cannot exhibit anomalies. This implies that all non-Abelian finite simple groups are anomaly-fre…
Symmetries of symmetries and geometrical CP violation
Maximilian Fallbacher, Andreas Trautner
We investigate transformations which are not symmetries of a theory but nevertheless leave invariant the set of all symmetry elements and representations. Generalizing from the exa…
CP Violation from Finite Groups
Mu-Chun Chen, Maximilian Fallbacher, K. T. Mahanthappa +2
We discuss the origin of CP violation in settings with a discrete (flavor) symmetry . We show that physical CP transformations always have to be class-inverting automorphisms of…
Predictivity of models with spontaneously broken non-Abelian discrete flavor symmetries
Mu-Chun Chen, Maximilian Fallbacher, Yuji Omura +2
In a class of supersymmetric flavor models predictions are based on residual symmetries of some subsectors of the theory such as those of the charged leptons and neutrinos. However…
Supersymmetric unification and R symmetries
Mu-Chun Chen, Maximilian Fallbacher, Michael Ratz
We review the role of R symmetries in models of supersymmetric unification in four and more dimensions, and in string theory. We show that, if one demands anomaly freedom and fermi…
On predictions from spontaneously broken flavor symmetries
Mu-Chun Chen, Maximilian Fallbacher, Michael Ratz +1
We discuss the predictive power of supersymmetric models with flavor symmetries, focusing on the lepton sector of the standard model. In particular, we comment on schemes in which,…