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The N(p,2π)2N reactions near threshold

  • D.A. Zaikin
  • I.I. Osipchuk
Hadron physics

Abstract:

A preliminary calculation of the total cross sections for the reactions pnpnπ+π, ppppπ+π, ppppπ0π0, and ppnnπ+π+ was carried out for the incident proton energy range Ep≲ 850 MeV. This calculation was done in the framework of a model based on a version of the standard effective chiral Lagrangian, for which only three- and four-pion diagrams were taken into account together with diagrams containing two two-pion vertices. The invariant amplitudes were calculated to the threshold approximation. It was shown that for a reliable description of the reactions under consideration it is necessary to take into account the N*(1440) mechanism too. The final state interaction of the nucleons was also considered. Results of the calculation are compared with available experimental data.

PACS: 13.75.-n Hadron-induced low- and intermediate-energy reactions and scattering (energy ≤ 10 GeV) – 13.75.Cs Nucleon-nucleon interactions 

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Copyright information

© Springer-Verlag Berlin Heidelberg 1999

Authors and Affiliations

  • D.A. Zaikin
    • 1
  • I.I. Osipchuk
    • 1
  1. 1.Institute for Nuclear Research of the Russian Academy of Sciences, 117312 Moscow, RussiaRU

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