The 33rd International Symposium on Lattice Field Theory (Lattice 2015)

Determination of εK using lattice QCD inputs

15 Jul 2015, 18:30

2h 30m

4th floor (Kobe International Conference Center)

Board: 5

Poster Weak Decays and Matrix Elements Poster Session

Speaker

Prof. Weonjong Lee (Seoul National University)

Description

We present the Standard Model evaluation of the indirect CP violation parameter $\text{Undefined control sequence varepislon}$ determined using lattice QCD inputs: ${\hat{B}}_K$, ${\xi }_0$, $V_{us}$, and $V_{cb}$. We find that the Standard Model prediction of ${\epsilon }_K$ with exclusive $V_{cb}$ (lattice QCD results) is lower than the experimental value by $3.6\sigma$. However, this tension disappears with inclusive $V_{cb}$ (results of heavy quark expansion).

Presentation materials

Slides

wlee.pdf