By NelmaS on Dom, 14/05/2017 - 21:20
CFTP - IST
Abstract / Resumo
It is well known that discrete symmetries such as CP are not uniquely defined in quantum field theory, and a certain freedom of their definition exists. In particular, the CP transformation can be of order 4, not 2, and still lead to acceptable phenomenology. I will present the minimal multi-Higgs model which implements this symmetry (CP4) without leading to accidental symmetries. This single assumption is surprisingly strong. It gives a well defined three-Higgs-doublet model with very specific Yukawa sectors and, after spontaneous breaking of CP4, can accommodate all fermion masses, mixing, and CP violation.
17 de maio de 2017 | 14:30
Physics Department Aveiro University
Campus de Santiago
3810-183 Aveiro, Portugal