Yukawa interactions, flavor symmetry, and non-canonical Kähler potential

Kawamura, Yoshiharu (Department of Physics, Shinshu University, Matsumoto 390-8621, Japan)

02 May 2019

Abstract: We study the origin of fermion mass hierarchy and flavor mixing in the standard model, paying attention to flavor symmetries and fermion kinetic terms. There is a possibility that the hierarchical flavor structure of quarks and charged leptons originates from non-canonical types of fermion kinetic terms in the presence of flavor-symmetric Yukawa interactions. A flavor symmetry can be hidden in the form of non-unitary bases in the standard model. The structure of the Kähler potential could become a touchstone of new physics.

Published in: PTEP 2019 (2019) 043B05
Published by: Oxford University Press/Physical Society of Japan
DOI: 10.1093/ptep/ptz018
arXiv: 1808.06315
License: CC-BY-3.0

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