The role of f0(1710) in the φω threshold peak of J/Ψ → γφω

被引：29

作者：

Martinez Torres, A. ^{[1
]}

Khemchandani, K. P. ^{[1
]}

Navarra, F. S. ^{[1
]}

Nielsen, M. ^{[1
]}

Oset, E. ^{[1
,2
,3
]}

机构：

[1] Univ Sao Paulo, Inst Fis, BR-05389970 Sao Paulo, Brazil

[2] Ctr Mixto Univ Valencia CSIC, Dept Fis Teor, Inst Invest Paterna, Valencia 46071, Spain

[3] Ctr Mixto Univ Valencia CSIC, IFIC, Inst Invest Paterna, Valencia 46071, Spain

来源：

PHYSICS LETTERS B | 2013年 / 719卷 / 4-5期

基金：

巴西圣保罗研究基金会;

关键词：

RESONANCES; F(2)(1270); MESON;

D O I：

10.1016/j.physletb.2013.01.036

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the process J/Psi -> gamma phi omega, measured by the BES experiment, where a neat peak close to the phi omega threshold is observed and is associated to a scalar meson resonance around 1800 MeV. We make the observation that a scalar resonance coupling to phi omega unavoidably couples strongly to K (K) over bar, but no trace of a peak is seen in the K (K) over bar spectrum of the J/Psi -> gamma K (K) over bar at this energy. This serves us to rule out the interpretation of the observed peak as a signal of a new resonance. After this is done, a thorough study is performed on the production of a pair of vector mesons and how its interaction leads necessarily to a peak in the J/Psi -> gamma phi omega reaction close to the phi omega threshold, due to the dynamical generation of the f(0)(1710) resonance by the vector-vector interaction. We then show that both the shape obtained for the phi omega mass distribution, as well as the strength are naturally reproduced by this mechanism. The work also explains why the phi omega peak is observed in the BES experiment and not in other reactions, like B-+/- -> K-+/-phi omega of Belle. (c) 2013 Published by Elsevier B.V.

引用

页码：388 / 393

页数：6

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