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arXiv · hep-ex/0107023

Measuring the Hadronic Cross Section at KLOE using the Radiative Return

The KLOE Collaboration
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Abstract

We present a study of the reaction e+e- \to pi+pi-gamma at the phi peak with the KLOE detector at the phi-factory DAPHNE. This reaction allows us to obtain the cross section for \e+e- \to pi+pi- from the e+e- center-of-mass energy W = m_ϕ= 1019 MeV down to threshold, i.e. 2m_pi < M_(pipi) < m_phi. This is called radiative return. The status of the analysis and preliminary results on the invariant mass spectrum of the two-pion-state are presented.

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The KLOE Collaboration. 2001-07-10. Measuring the Hadronic Cross Section at KLOE using the Radiative Return. https://arxiv.org/abs/hep-ex/0107023

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