CP Violation from String Theory

Nilles, Hans Peter; Ratz, Michael; Trautner, Andreas; Vaudrevange, Patrick K. S.

doi:10.1016/j.physletb.2018.09.053

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CP Violation from String Theory

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Trautner, Andreas
Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society;

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Citation

Nilles, H. P., Ratz, M., Trautner, A., & Vaudrevange, P. K. S. (2018). CP Violation from String Theory. Physics Letters B, 786, 283-287. doi:10.1016/j.physletb.2018.09.053.

Cite as: https://hdl.handle.net/21.11116/0000-0005-5143-4

Abstract

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