On the extraction of the quark mass ratio (md−mu)/ms from Γ(η′→π0π+π−)/Γ(η′→ηπ+π−)

The claim that the light quark mass ratio (md−mu)/ms can be extracted from the decay width ratio Γ(η′→π0π+π−)/Γ(η′→ηπ+π−) is critically investigated within a U(3) chiral unitary framework. The influence of the recent VES data on the η′→ηπ+π− decay is also discussed.

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Published in:Physics letters. B 2006-11, Vol.643 (1), p.41-45
Main Authors: Borasoy, B., Meißner, Ulf-G., Nißler, R.
Format: Article
Language:English
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Exact sciences and technology
Nuclear physics
Physics
The physics of elementary particles and fields
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Nißler, R.
description The claim that the light quark mass ratio (md−mu)/ms can be extracted from the decay width ratio Γ(η′→π0π+π−)/Γ(η′→ηπ+π−) is critically investigated within a U(3) chiral unitary framework. The influence of the recent VES data on the η′→ηπ+π− decay is also discussed.
doi_str_mv 10.1016/j.physletb.2006.10.020
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subjects Exact sciences and technology
Nuclear physics
Physics
The physics of elementary particles and fields
title On the extraction of the quark mass ratio (md−mu)/ms from Γ(η′→π0π+π−)/Γ(η′→ηπ+π−)
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