We present updated results for εK determined directly from the standard model (SM) with lattice QCD inputs such as BK, |Vcb|, |Vus|, ξ0, ξ2, ξLD, FK, and mc. We find that the standard model with exclusive |Vcb| and other lattice QCD inputs describes only 70% of the experimental value of |εK| and does not explain its remaining 30%, which leads to a strong tension in |εK| at the 4σ level between the SM theory and experiment. We also find that this tension disappears when we use the inclusive value of |Vcb| obtained using the heavy quark expansion based on QCD sum rules.
|Journal||Proceedings of Science|
|Publication status||Published - 2018|
|Event||36th Annual International Symposium on Lattice Field Theory, LATTICE 2018 - East Lansing, United States|
Duration: 2018 Jul 22 → 2018 Jul 28
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