CP violation in the effective action of the Standard Model

Details CP violation in the effective action of the Standard Model CP violation in the effective action of the Standard Model

2009-03-31

arxiv.org/abs/0903.5494v2

JHEP 0907:015,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

32 pages, no figures. Section added. To appear in JHEP

Scientific paper

10.1088/1126-6708/2009/07/015

Following a suggestion by Smit, the CP odd terms of the effective action of the Standard Model, obtained by integration of quarks and leptons, are computed to sixth order within a strict covariant derivative expansion approach. No other approximations are made. The final result so derived includes all Standard Model gauge fields and Higgs. Remarkably, at the order considered in this work, all parity violating contributions turn out to be zero. Non vanishing CP violating terms are obtained in the C-odd P-even sector. These are several orders of magnitude larger than perturbative estimates. Various unexpected regularities in the final result are noted.

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