Kaon and Antikaon properties in cold nuclear medium

C. L. Korpa, M. F.M. Lutz

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25 Citations (Scopus)


We present results of a self-consistent calculation for the kaon and antikaon spectral functions in cold nuclear matter, using as input the kaonnucleon and antikaon-nucleon scattering amplitudes of the vacuum. We investigate the effect of in-medium pion dressing on the antikaon-nucleon scattering amplitudes and antikaon spectral function. We find the influence of pion dressing to be minor on the antikaon spectral function and limited on the hyperon resonances causing only a small additional broadening. An exception is the Σ(1690). At nuclear saturation density an attractive mass shift of about 20MeV and width of about 130 MeV is obtained. The kaon shows a repulsive mass increase of 36 MeV and a small width of the quasiparticle peak at saturation density.

Original languageEnglish
Pages (from-to)21-28
Number of pages8
JournalActa Physica Hungarica, Series A: Heavy Ion Physics
Issue number1-2
Publication statusPublished - Apr 7 2005



  • Antikaon
  • Kaon
  • Nuclear medium
  • Pion

ASJC Scopus subject areas

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

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