Scalar mesons and delta0-delta2 at KLOE

The KLOE collaboration

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arXiv · hep-ex/0310031

Scalar mesons and delta0-delta2 at KLOE

The KLOE collaboration

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Abstract

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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The KLOE collaboration. 2003-10-15. Scalar mesons and delta0-delta2 at KLOE. https://arxiv.org/abs/hep-ex/0310031

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