PoS - Proceedings of Science
Volume 256 - 34th annual International Symposium on Lattice Field Theory (LATTICE2016) - Poster Session
Status report on $\varepsilon_K$ with lattice QCD inputs
W. Lee*, J. Bailey, J. Leem, S. Park, Y.C. Jang and  SWME Collaboration
Full text: pdf
Pre-published on: December 27, 2016
Published on: March 24, 2017
Abstract
We report the current status of $\epsK$, the indirect CP
violation parameter in the neutral kaon system, evaluated using the
lattice QCD inputs.
We use lattice QCD to fix $\BK$, $\xi_0$, $\xi_2$,
$|V_{us}|$, $m_c(m_c)$, and $|V_{cb}|$.
Since Lattice 2015, FLAG updated $\BK$, exclusive $V_{cb}$ has been
updated with new lattice data in the $\bar{B}\to D\ell\nu$ decay channel, and
RBC-UKQCD has updated $\xi_0$ and $\xi_2$.
Our preliminary results show that the standard model evaluation
of $\epsK$ with exclusive $|V_{cb}|$ (lattice QCD inputs) has
$3.2\sigma$ tension with the experimental value, while that of
$\epsK$ with inclusive $|V_{cb}|$ (heavy quark expansion) shows no
tension.
DOI: https://doi.org/10.22323/1.256.0383
How to cite

Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.

Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.