TY  - EJOUR
AU  - Díaz-Cruz, J. L.
AU  - Hollik, Wolfgang
AU  - Saldaña-Salazar, U. J.
TI  - A bottom-up approach to the strong CP problem
IS  - DESY-16-084
M1  - PUBDB-2016-01947
M1  - DESY-16-084
M1  - arXiv:1605.03860
PY  - 2016
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)25 ; PUB:(DE-HGF)29
DO  - DOI:10.3204/PUBDB-2016-01947
UR  - https://bib-pubdb1.desy.de/record/299309
ER  -