Kaon pair production close to threshold

Abstract

The total cross section of the reaction pp->ppK+K- has been measured at excess energies Q=10 MeV and 28 MeV with the magnetic spectrometer COSY-11. The new data show a significant enhancement of the total cross section compared to pure phase space expectations or calculations within a one boson exchange model. In addition, we present invariant mass spectra of two particle subsystems. While the K+K- system is rather constant for different invariant masses, there is an enhancement in the pK- system towards lower masses which could at least be partially connected to the influence of the Lambda(1405) resonance.

accepted for publication in Phys. Lett. B

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Cited by in corpus (23)

• Phi decay: a relevant source for K- production at SIS energies?
• Kaon Pair Production in Proton--Proton Collisions
• 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
• Coupled-channel effects in the pp -> ppK+K- reaction
• Strangeness production via resonances in heavy-ion collisions at SIS energies
• Generalized Dalitz Plot analysis of the near threshold pp-->ppK+K- reaction in view of the K+K- final state interaction
• Role of the $N^{\ast }(2080)$ in $pp\to p{K}^{+}\Lambda (1520)$ and ${\pi }^{-}p\to K^0\Lambda (1520)$ reactions
• 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
• Eta and eta' mesons production at COSY-11
• The legacy of the experimental hadron physics programme at COSY
• General thoughts to the Kaon pair production in the threshold region
• Study of the K+K- Interaction at COSY-11
• Phenomenological studies of the low energy dynamics in the $pp{K}^{+}{K}^{-}$ system
• Study of the hadronic production of kaon pairs below the threshold for the phi meson
• Strangeness Production in Hadron Reactions
• Strangeness Production at COSY
• Meson-production experiments at COSY-Juelich
• Near threshold production of the pseudoscalar mesons at the COSY-11 facility