$\epsilon'$ from right-handed currents
Abstract
Recent lattice determinations of direct CP violation in kaon decays, parametrized by , suggest a discrepancy of several sigma between experiment and the standard model. Assuming that this situation is due to new physics, we investigate a solution in terms of right-handed charged currents. Chiral perturbation theory, in combination with lattice QCD results, allows one to accurately determine the effect of right-handed interactions on . In addition, similar techniques provide a direct link between the right-handed contributions to and hadronic electric dipole moments. We demonstrate that the discrepancy can be resolved with right-handed charged currents, and that this scenario can be falsified by next-generation hadronic electric dipole moment experiments.
Cite
@article{arxiv.1708.00797,
title = {$\epsilon'$ from right-handed currents},
author = {W. Dekens},
journal= {arXiv preprint arXiv:1708.00797},
year = {2017}
}
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