Spontaneous CP violation and the strong CP problem in left-right symmetric 
theories

Ohmer, Sebastian

doi:10.1103/PhysRevD.99.115031

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Spontaneous CP violation and the strong CP problem in left-right symmetric theories

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Ohmer, Sebastian
Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society;

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Citation

Ohmer, S. (2019). Spontaneous CP violation and the strong CP problem in left-right symmetric theories. Physical Review D, 99(11): 115031. doi:10.1103/PhysRevD.99.115031.

Cite as: https://hdl.handle.net/21.11116/0000-0005-4DB0-E

Abstract

We study spontaneous CP violation as a solution to the strong CP problem in left-right symmetric theories. The discrete CP symmetry is broken by a complex vacuum expectation value of a right-handed Higgs doublet. Heavy vectorlike down-type quarks mix with the Standard Model quarks introducing the known CP violation-realizing a variant of the Nelson-Barr mechanism. A nonvanishing QCD vacuum angle is generated at loop level. The implementation in the ultraviolet complete theory of trinification at low scales is discussed. We further comment on the phenomenology and future testability of the model.