Final State Interaction Effects in the $e^{+}{e}^{-}\to N\bar{N}$ Process near Threshold

Abstract

We use the Paris nucleon-antinucleon optical potential for explanation of experimental data in the process $e^{+}{e}^{-}\to p\bar{p}$ near threshold. It is shown that the cross section and the electromagnetic form factors are very sensitive to the parameters of the potential. It turns out that final-state interaction due to slightly modified absorptive part of the potential allows us to reproduce available experimental data. We also demonstrated that the cross section in $n\bar{n}$ channel is larger than that in $p\bar{p}$ one, and their ratio is almost energy independent up to 2.2 GeV.

references added, changes in the text according to referee comments

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Cited by in corpus (8)

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• Near Threshold Enhancement of p pbar System and p pbar Elastic Scattering
• No Sommerfeld resummation factor in e+e- -> ppbar ?
• Rescattering Effect and Near Threshold Enhancement of $p\bar{p}$ System
• $N\bar{N}$ production in $e^{+}{e}^{-}$ annihilation near the threshold revisited
• $N\bar{N}$ Scattering at NLO Order in An Effective Theory
• Coupled channels and production of near-threshold $B^{(\ast )}{\bar{B}}^{(\ast )}$ resonances in $e^{+}{e}^{-}$ annihilation