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arXiv · hep-ph/0103022

Model of Soft CP Violation

Paul H. Frampton·Sheldon L. Glashow·Tadashi Yoshikawa
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Abstract

We propose a model of soft CP violation that evades the strong CP problem and can describe observed CP violation in the neutral kaon sector, both direct and indirect. Our model requires two ``duark'' mesons carrying quark number two that have complex (CP-violating) bare masses and are coupled to quark pairs. Aside from the existence of these potentially observable new particles with masses of several hundred GeV, we predict a flat unitarity triangle ({\it i.e.,} no observable direct CP violation in the $B$-meson sector) and a possibly anomalous branching ratio for the decay mode $K^+\to π^++\barν ν$.

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Paul H. Frampton, Sheldon L. Glashow, Tadashi Yoshikawa. 2001-03-01. Model of Soft CP Violation. https://doi.org/10.1103/physrevlett.87.011801

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