Orateur
Amarjit Soni
(BNL)
Description
As shown in our PRL in 2015, after decades of efforts lattice methods are finally able to quantitatively
tackle the outstanding challenges of K=> pi pi and the direct CP violation parameter. Indeed that 1st calculation
showed a consistency of the Standard Model witb the experimental measurement at around 2 sigma.
Since then efforts are underway to improving statistics by a factor of 4 and several of the important systematics. Moreover, in recent years lattice methods have been developed for tackling long
distance parts of Delta m_K, indirect CP violation parameter epsilon and for rare K-decays
such as K^+ => pi^+ nu nu. A precsion experimental measurement of this important rare K-decay
is now underway at CERN by the NA-62 experiment. These developments now provide
a way to construct the unitarity triangle using mainly input from Kaon physics opening up
another avenue for stringent test of the SM and search for clues to new phenomena.
[Talk is primarily based on paper with Christoph Lehner and Enrico Lunghi]
Author
Amarjit Soni
(BNL)
