https://doi.org/10.1140/epja/i2008-10658-6
Letter
η , 
mixing angle and gluonium content extraction from the KLOE Rφ measurement⋆
Università degli Studi di Roma Tre, INFN sezione di Roma Tre, Roma, Italy
* e-mail: dimicco@fis.uniroma3.it
Received:
11
April
2008
Revised:
6
August
2008
Published online:
7
October
2008
In this report the extraction of the η , mixing angle and of the gluonium content from the R
φ = Br(φ(1020) → γ)/Br(φ(1020) → ηγ) is updated. The 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)° .
PACS: 14.40.Aq π , K , and η mesons – / 13.20.Jf Decays of other mesons – / 12.39.Mk Glueball and nonstandard multi-quark/gluon states –
© SIF, Springer-Verlag Berlin Heidelberg, 2008
