Direct CP violation and the ΔI=1/2 rule in K→ππ decay from the standard model
/ Authors
Ryan Abbott, T. Blum, P. Boyle, Mattia Bruno, N. Christ, D. Hoying, C. Jung, C. Kelly, C. Lehner, R. Mawhinney
and 5 more authors
/ Abstract
We discuss the RBC & UKQCD collaborations’ recent [1] lattice calculation of ϵ′, the measure of direct CP-violation in kaon decays. This result significantly improves on our previous 2015 calculation, with nearly 4× the statistics and more reliable systematic error estimates. We discuss how our results demonstrate the Standard Model origin of the ΔI = 1/2 rule, and present our plans for future calculations.
Journal: Physical Review D