CP - violation from Noncommutative Geometry ∗

If the geometry of space-time is noncommutative, i.e. [x µ , x ν ] = iθ µν , then noncommutative CP violating effects may be manifest at low energies. For a noncommutative scale Λ ≡ θ −1/2 ≤ 2 T eV , CP violation from noncommutative geometry is comparable to that from the Standard Model (SM) alone: the noncommutative contributions to ǫ and ǫ ′ /ǫ in the K-system, and to sin 2β in the B-system, may actually dominate over the Standard Model contributions. Present data permit noncommutative geometry to be the only source of CP violation. Furthermore the most recent findings for g − 2 of the muon are consistent with predictions from noncommutative geometry.