23–28 Jun 2014
Columbia University
US/Eastern timezone

Lattice Measurement of the Delta I=1/2 Contribution to Standard Model Direct CP-Violation in K->pi pi Decays at Physical Kinematics: Part I

23 Jun 2014, 16:50
20m
140 Uris

140 Uris

Talk Weak Decays and Matrix Elements Weak Decays and Matrix Elements

Speaker

Dr Christopher Kelly (Brookhaven National Laboratory)

Description

The RBC & UKQCD collaborations have recently published lattice results for the K->pi pi decay amplitude in the I=2 channel, A_2, and improved results will be presented at this conference. In this presentation we discuss the determination of the I=0 channel amplitude, A_0. Combining this with A_2 provides epsilon', the measure of direct CP-violation in the Standard Model. In part I we provide an overview of the project and detail our use of G-parity boundary conditions to achieve physical kinematics in the decay, as well as discussing the ongoing generation of the specialized lattices required.

Primary author

Dr Christopher Kelly (Brookhaven National Laboratory)

Co-author

Mr Daiqian Zhang (Columbia University)

Presentation materials