Epsilon'/Epsilon in the Standard Model: Theoretical Update

2004/10/14 by A. Pich, Pich, A.
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #hep-ph

paper · pdf · doi:10.48550/arxiv.hep-ph/0410215

4 pages. Proceedings ICHEP'04, Beijing, China, 16-22 August 2004

arxiv created 2004/10/14 · arxiv updated 2009/12/01

Abstract

A complete analysis of isospin breaking in K to 2 pion amplitudes, including both strong and electromagnetic corrections at next-to-leading order in chiral perturbation theory, has been achieved recently.We discuss the implication of these effects, together with the previously known chiral loop corrections, on the direct CP-violating ratio epsilon'/epsilon. One finds Re(epsilon'/epsilon) = (19⁺¹¹_-9) 10^-4.

Related

• epsilon'/epsilon and Chiral Dynamics
• Present Status of epsilon'/epsilon
• epsilon'/epsilon in the 1/N_c Expansion
• A complete update of ε'/ε in the Standard Model
• Theoretical Status of epsilon'/epsilon