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CP\mathcal{CP} Violation from String Theory

Abstract

We identify a natural way to embed CP\mathcal{CP} symmetry and its violation in string theory. The CP\mathcal{CP} symmetry of the low energy effective theory is broken by the presence of heavy string modes. CP\mathcal{CP} violation is the result of an interplay of CP\mathcal{CP} and flavor symmetry. CP\mathcal{CP} violating decays of the heavy modes could originate a cosmological matter-antimatter asymmetry.Comment: 7 pages, 4 figure

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