th / 0 60 70 03 v 1 4 J ul 2 00 6 Final State Interaction Effects in NN̄ Production near Threshold

نویسندگان

  • V. F. Dmitriev
  • A. I. Milstein
چکیده

We use the Paris nucleon-antinucleon optical potential for explanation of experimental data in the process e + e − → p¯ 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¯ n channel is larger than that in p¯ p one, and their ratio is almost energy independent up to 2.2 GeV.

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تاریخ انتشار 2006