Affiliation:
1. Albert Einstein Center for Fundamental Physics, Institute for Theoretical Physics, University of Bern, Sidlerstrasse 5, 3012 Bern, Switzerland
Abstract
The problems encountered in the determination of mu and md are discussed. While their sum is known quite well, the difference md-mu, which measures the breaking of isospin symmetry in the QCD Lagrangian, is still subject to significant uncertainties. I focus on recent work based on the dispersive analysis of the decay η→3π, which offers a good handle on isospin breaking, because in that transition, the contributions from the e.m. interaction are suppressed.
Publisher
World Scientific Pub Co Pte Lt
Subject
General Physics and Astronomy,Astronomy and Astrophysics,Nuclear and High Energy Physics
Cited by
9 articles.
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