Electric Dipole Moments as Probes of CPT Invariance

Details Electric Dipole Moments as Probes of CPT Invariance Electric Dipole Moments as Probes of CPT Invariance

2006-09-15

arxiv.org/abs/hep-ph/0609153v3

Phys.Rev.D78:057702,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, typos corrected

Scientific paper

10.1103/PhysRevD.78.057702

Electric dipole moments (EDMs) of elementary particles and atoms probe violations of T and P symmetries and consequently of CP if CPT is an exact symmetry. We point out that EDMs can also serve as sensitive probes of CPT-odd, CP-even interactions, that are not constrained by any other existing experiments. Analyzing models with spontaneously broken Lorentz invariance, we calculate EDMs in terms of the leading CPT-odd operators to show that experimental sensitivity probes the scale of CPT breaking as high as 10^{12}GeV.

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