Kaon pair production in proton-nucleus collisions at 2.83 GeV kinetic energy

Abstract

The production of non-phi K+K- pairs by protons of 2.83 GeV kinetic energy on C, Cu, Ag, and Au targets has been investigated using the COSY-ANKE magnetic spectrometer. The K- momentum dependence of the differential cross section has been measured at small angles over the 0.2--0.9 GeV/c range. The comparison of the data with detailed model calculations indicates an attractive K- -nucleus potential of about -60 MeV at normal nuclear matter density at a mean momentum of 0.5 GeV/c. However, this approach has difficulty in reproducing the smallness of the observed cross sections at low K- momenta.

arXiv comment7 pages, 5 figures, 1 table

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Cited by in corpus (3)

• Meson-nucleus potentials and the search for meson-nucleus bound states
• Medium effects in $\Lambda K^{+}$ pair production by 2.83 GeV protons on nuclei
• Taking into Account the Centre-of-Mass Correlations in the Cross Sections for Elastic Scattering of Intermediate Energy Protons on the Exotic Nuclei ${}^6$He and ${}^8$He