Journal
PHYSICS LETTERS B
Volume 643, Issue 1, Pages 41-45Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physletb.2006.10.020
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The claim that the light quark mass ratio (m(d) - m(u))/m(s) can be extracted from the decay width ratio Gamma(eta' -> pi(0)pi(+)pi(-))/Gamma(eta' -> eta pi(+)pi(-)) is critically investigated within a U(3) chiral unitary framework. The influence of the recent VES data on the eta' -> eta pi(+)pi(-) decay is also discussed. (c) 2006 Elsevier B.V. All rights reserved.
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