Sizable CP Violation in the Bosonized Standard Model

Details Sizable CP Violation in the Bosonized Standard Model Sizable CP Violation in the Bosonized Standard Model

2008-10-22

arxiv.org/abs/0810.4092v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, minor changes, published version

Scientific paper

10.1016/j.nuclphysb.2008.12.021

Using the worldline method, we derive an effective action of the bosonic sector of the Standard Model by integrating out the fermionic degrees of freedom. The CP violation stemming from the complex phase in the CKM matrix gives rise to CP-violating operators in the one-loop effective action in the next-to-leading order of a gradient expansion. We calculate the prefactor of the appropriate operators and give general estimates of CP violation in the bosonic sector of the Standard Model. In particular, we show that the effective CP violation for weak gauge fields is not suppressed by the Yukawa couplings of the light quarks and is much larger than the bound given by the Jarlskog determinant.

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