Scalar mesons and delta0-delta2 at KLOE

Details Scalar mesons and delta0-delta2 at KLOE Scalar mesons and delta0-delta2 at KLOE

2003-10-15

arxiv.org/abs/hep-ex/0310031v1

Physics

High Energy Physics

High Energy Physics - Experiment

6 pages, 6 figures, Talk at the International Workshop on QCD: QCD@Work 2003 - Conversano (Italy) 14-18 June 2003 (eConf C0306

Scientific paper

The KLOE measurement of phi radiative decays and of the ratio Gamma(Ks->pi+pi-(gamma))/Gamma(Ks->pi0pi0) are discussed. The first measurement aims at understanding the real nature of the scalar mesons a0 and f0, whose possible compositions are qq, qqqq, or KK molecule. The second measurement is related to the estimate of the phase shift difference delta0-delta2. Previous measurements were affected by a large uncertainty due to the presence of radiative effects which are correctly included in our analysis.

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