Coupled-channel effects in the pp -> ppK+K- reaction

Abstract

The cross sections for the pp -> ppK+K- reaction were measured at three beam energies 2.65, 2.70, and 2.83 GeV at the COSY-ANKE facility. The shape of the K+K- spectrum at low invariant masses largely reflects the importance of K\bar{K} final state interactions. It is shown that these data can be understood in terms of an elastic K+K- rescattering plus a contribution coming from the production of a K0\bar{K}0 pair followed by a charge-exchange rescattering. Though the data are not yet sufficient to establish the size of the cusp at the K0\bar{K}0 threshold, the low mass behaviour suggests that isospin-zero production is dominant.

9 pages with 4 figures

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Cited by in corpus (15)

• Couplings in coupled channels versus wave functions in the case of resonances: application to the two $\Lambda (1405)$ states
• The role of $f_0(1710)$ in the $\varphi \omega$ threshold peak of $J/\Psi \to \gamma \varphi \omega$
• Associated strangeness production in the pp to pK^+K^-p and pp to pK^+ pi^0 Sigma^0 reactions
• The production of K+K- pairs in proton-proton collisions at 2.83 GeV
• Measurement of the pn -> dK^+K^- total cross section close to threshold
• The production of K+K- pairs in proton-proton collisions below the phi meson threshold
• $pp\to pp{\eta }^{\prime }$ reaction at high energies
• $pp\to pp{K}^{+}{K}^{-}$ reaction at high energies
• Generalized Dalitz Plot analysis of the near threshold pp-->ppK+K- reaction in view of the K+K- final state interaction
• 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
• Preliminary lattice study of the I=1 $K\bar{K}$ scattering length
• Strong interaction between kaons in the reactions e+ e- --> K+ K- gamma and e+ e- --> K0 K0bar gamma
• Meson-production experiments at COSY-Juelich
• Phenomenological studies of the low energy dynamics in the $pp{K}^{+}{K}^{-}$ system