${\epsilon }^{\prime }/\epsilon$ at $O(p^4)$ in the Chiral Expansion

S. Bertolini, J. O. Eeg, M. Fabbrichesi +1

After updating the determination of the combination of Kobayashi-Maskawa elements $\Im V_{td}{V}_{ts}^{\ast }$ according to our new estimate of the parameter ${\hat{B}}_K$, we study the CP-v…