The production of K+K- pairs in proton-proton collisions at 2.83 GeV

Abstract

Differential and total cross sections for the pp -> ppK+K- reaction have been measured at a proton beam energy of 2.83 GeV using the COSY-ANKE magnetic spectrometer. Detailed model descriptions fitted to a variety of one-dimensional distributions permit the separation of the pp -> pp phi cross section from that of non-phi production. The differential spectra show that higher partial waves represent the majority of the pp -> pp phi total cross section at an excess energy of 76 MeV, whose energy dependence would then seem to require some s-wave phi-p enhancement near threshold. The non-phi data can be described in terms of the combined effects of two-body final state interactions using the same effective scattering parameters determined from lower energy data.

12 pages, 12 figures, 3 tables

References in corpus (11)

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• Kaon Pair Production in Proton--Proton Collisions
• Kaon pair production close to threshold
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• Few-body aspects of the near threshold pseudoscalar meson production
• Combined analysis of the $K^{+}{K}^{-}$ interaction using near threshold $pp\to pp{K}^{+}{K}^{-}$ data
• Formation of eta'(958) bound states by (gamma, d) reaction
• Search for Pentaquark Theta+ in Hadronic Reaction at J-PARC
• Populating Low-Spin States in Radioactive Nuclei to Measure Magnetic Moments Using the Transient Field Technique
• Strong interaction between kaons in the reactions e+ e- --> K+ K- gamma and e+ e- --> K0 K0bar gamma
• Phenomenological studies of the low energy dynamics in the $pp{K}^{+}{K}^{-}$ system