Determination of σ(e+e–→ π+π–) from radiative processes at DAΦNE

We have measured the cross section σ(e + e − →π + π − γ) with the KLOE detector at DAΦNE, at an energy W = Mφ =1 .02 GeV. From the dependence of the cross section on m(π + π − )= W 2 − 2 WE γ, where Eγ is the energy of the photon radiated from the initial state, we extract σ(e + e − →π + π − ) for the mass range 0.35

Keywords:

• Particle physics
• Atomic physics
• Muon
• Hadron
• M.2
• Radiative transfer
• Nuclear physics
• Pion
• Electron–positron annihilation
• Physics
• Form factor (quantum field theory)
• Radiative process
• Photon
• Detector

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