Near-threshold electroproduction of neutral pions on protons

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Abstract

The near-threshold electroproduction of neutral pions on protons is considered within the phenomenological model that is based on the hard-pion current algebra and which takes into consideration explicit chiral-symmetry breaking. The s-wave differential cross section at the threshold is found as a function of the squared momentum transfer k2. The dependence of the s-wave multipole amplitudes Re E0+ and Re L0+ on the energy of the π0p system near the threshold is obtained for low k2 and for k2 = 0.1 (GeV/c)2. The results are compared with experimental data. The importance of explicit chiral-symmetry breaking is demonstrated.

Original languageEnglish
Pages (from-to)1490-1496
Number of pages7
JournalPhysics of Atomic Nuclei
Volume60
Issue number9
Publication statusPublished - Sep 1997

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ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Nuclear and High Energy Physics

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