Feasibility studies of the time-like proton electromagnetic form factor measurements with PANDA at FAIR
نویسنده
چکیده
The possibility of measuring the proton electromagnetic form factors in the time-like region at FAIR with the PANDA detector is discussed. Detailed simulations on signal efficiency for the annihilation of p̄+ p into a lepton pair as well as for the most important background channels have been performed. It is shown that precision measurements of the differential cross section of the reaction p̄+ p → e + e− can be obtained in a wide angular and kinematical range. The individual determination of the moduli of the electric and magnetic proton form factors will be possible up to a value of momentum transfer squared of q ≃ 14 (GeV/c). The total p̄+ p → e + e− cross section will be measured up to q ≃ 28 (GeV/c). The results obtained from simulated events are compared to the existing data. Sensitivity to the two photons exchange mechanism is also investigated. PACS. 25.43.+t Antiproton-induced reactions – 13.40.Gp Electromagnetic form factors
منابع مشابه
Feasibility studies of time-like proton electromagnetic form factors at PANDA at FAIR
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