Speaker:
Saul Ramos-Sanchez
Date:
Wednesday, October 14, 2020
Time:
11:00 am
Location:
Zoom Seminar
Abstract:
One interesting extant question is the origin of the number of families of quarks and leptons in the standard model and their mixings. Traditionally, this has been addressed by introducing some ad hoc non-Abelian global symmetry as a sort of hidden structure governing the Yukawa couplings and thereby the mixing matrices. More recently, it has been shown that discrete modular symmetries provide a better tool constraining those mixings with less input parameters. We shall discuss in this talk how this new idea is in fact non-trivially intertwined with the traditional flavor approach, leading to the new picture of eclectic flavor symmetries. Further, we shall describe how the eclectic scenario arises in string compactifications known as heterotic orbifolds, and discuss some of its consequences for future phenomenological studies.
One interesting extant question is the origin of the number of families of quarks and leptons in the standard model and their mixings. Traditionally, this has been addressed by introducing some ad hoc non-Abelian global symmetry as a sort of hidden structure governing the Yukawa couplings and thereby the mixing matrices. More recently, it has been shown that discrete modular symmetries provide a better tool constraining those mixings with less input parameters. We shall discuss in this talk how this new idea is in fact non-trivially intertwined with the traditional flavor approach, leading to the new picture of eclectic flavor symmetries. Further, we shall describe how the eclectic scenario arises in string compactifications known as heterotic orbifolds, and discuss some of its consequences for future phenomenological studies.
Host:
Michael Ratz