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

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

2006-07-04

arxiv.org/abs/nucl-th/0607003v4

Nucl.Phys.Proc.Suppl.162:53-56,2006

Physics

Nuclear Physics

Nuclear Theory

references added, changes in the text according to referee comments

Scientific paper

10.1016/j.nuclphysbps.2006.09.06

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.

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