Measurement of the hadronic cross section at DAPHNE with the KLOE detector

2003/11/05 by Achim Denig, Denig, Achim, KLOE collaboration +1
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #hep-ex

paper · pdf · doi:10.48550/arxiv.hep-ex/0311012

Proceedings for HADRON2003, Aschaffenburg/Germany, Aug.31-Sept.6 2003, 6 pages, 2figures

arxiv created 2003/11/05 · arxiv updated 2009/12/01

Abstract

We have measured the cross section sigma(e+e- → pi+pi-gamma) as a function of the pi+pi- invariant mass, M_pipi, with the KLOE detector at DAPHNE (W=m_phi=1.02GeV). The photon in the above process is due to Initial State Radiation. Dividing by a theoretical radiator function we obtain the cross section sigma(e+e- → pi+pi-) for the mass range 0.37<M_pipi²<0.93GeV². We extract the pion form factor and the hadronic contribution to the muon anomaly, a_mu.

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