DAPNIA-04-10 |
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New possibility for further measurements of nucleon form factors at large momentum transfer in time-like region: $\overline{p}+{p}}\\to \\ell^++\\ell^-$, $\\ell=e$ or $\\mu$ |
E. Tomasi-Gustafsson, M. P. Rekalo |
We briefly summarize the status with electromagnetic nucleon form factors, and give in this framework, arguments to study the angular dependence of the differential cross section and single-spin polarization phenomena (polarized target or polarized beam) in $\\overline{p}+{p}\\to \\ell^++\\ell^-$, in view of the availability of future antiproton beams. |