TY  - JOUR
AU  - Diaz-Cruz, J. L.
AU  - Hollik, Wolfgang
AU  - Saldana-Salazar, U. J.
TI  - A bottom-up approach to the strong CP problem
JO  - International journal of modern physics / A
VL  - 33
IS  - 14n15
SN  - 1793-656X
CY  - Singapur
PB  - World Scientific Publ.
M1  - PUBDB-2018-02253
M1  - DESY-16-084
M1  - arXiv:1605.03860
SP  - 1850088
PY  - 2018
N1  - (c) World Scientific Publishing Company
AB  - The strong CP problem is one of many puzzles in the theoretical description of elementary particles physics that still lacks an explanation. Solutions to that problem usually comprise new symmetries or fields or both. The main problem seems to be how to achieve small CP in the strong interactions despite large CP violation in weak interactions. Observation of CP violation is exclusively through the Higgs-Yukawa interactions. In this letter, we show that with minimal assumptions on the structure of mass (Yukawa) matrices the strong CP problem does not exist in the Standard Model and no extension to solve this is needed. However, to solve the flavor puzzle, models based on minimal SU(3) flavor groups leading to the proposed flavor matrices are favored.
LB  - PUB:(DE-HGF)29 ; PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000433257500009
DO  - DOI:10.1142/S0217751X18500884
UR  - https://bib-pubdb1.desy.de/record/405690
ER  -