Measuring the Hadronic Cross Section at KLOE using the Radiative Return

Details Measuring the Hadronic Cross Section at KLOE using the Radiative Return Measuring the Hadronic Cross Section at KLOE using the Radiative Return

2001-07-10

arxiv.org/abs/hep-ex/0107023v1

Physics

High Energy Physics

High Energy Physics - Experiment

Contributed Paper to "Lepton Photon 2001" Conference, Rome, July 23-28 2001; 7 pages, 5 plots

Scientific paper

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_\phi = 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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