Abstract
In this report the extraction of the η , \( \eta{^\prime}\) mixing angle and of the \( \eta{^\prime}\) gluonium content from the R φ = Br(φ(1020) → \( \eta{^\prime}\)γ)/Br(φ(1020) → ηγ) is updated. The \( \eta{^\prime}\) gluonium content is estimated by fitting R φ , together, with other decay branching ratios. The extracted parameters are: Z 2 G = 0.12±0.04 and ϕP = (40.4±0.9)° .
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Haiyan Gao
Original article based on material presented at HADRON 2007.
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Open Access This is an open access article distributed under the terms of the Creative Commons Attribution Noncommercial License (https://creativecommons.org/licenses/by-nc/2.0), which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.
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Di Micco, B. η , \( \eta{^\prime}\) mixing angle and \( \eta{^\prime}\) gluonium content extraction from the KLOE Rφ measurement⋆ . Eur. Phys. J. A 38, 129–131 (2008). https://doi.org/10.1140/epja/i2008-10658-6
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DOI: https://doi.org/10.1140/epja/i2008-10658-6