Antikaon production in nucleon-nucleon reactions near threshold

Abstract

The antikaon production cross section from nucleon-nucleon reactions near threshold is studied in a meson exchange model. We include both pion and kaon exchange, but neglect the interference between the amplitudes. In case of pion exchange the antikaon production cross section can be expressed in terms of the antikaon production cross section from a pion-nucleon interaction, which we take from the experimental data if available. Otherwise, a $K^{\ast }$-resonance exchange model is introduced to relate the different reaction cross sections. In case of kaon exchange the antikaon production cross section is related to the elastic $KN$ and $\bar{K}N$ cross sections, which are again taken from experimental measurements. We find that the one-meson exchange model gives a satisfactory fit to the available data for the $NN\to NNK\bar{K}$ cross section at high energies. We compare our predictions for the cross section near threshold with an earlier empirical parameterization and that from phase space models.

16 pages, LaTeX, 5 postscript figures included, submitted to Z. Phys. A

Cited by in corpus (34)

• Transport-theoretical Description of Nuclear Reactions
• Kaons in dense matter, kaon production in heavy-ion collisions, and kaon condensation in neutron stars
• Strangeness Production close to Threshold in Proton-Nucleus and Heavy-Ion Collisions
• Medium Effects in Kaon and Antikaon Production in Nuclear Collisions at Subthreshold Beam Energies
• From Kadanoff-Baym dynamics to off-shell parton transport
• Kaon production in heavy-ion collisions and maximum mass of neutron stars
• Medium Modified Cross Sections, Temperature and Finite Momentum Effects for Antikaon Production in Heavy-Ion Collisions
• Close-to-threshold Meson Production in Hadronic Interactions
• Hadronic Particle Production in Nucleus-Nucleus Collisions
• Antikaon Production in Proton-Nucleus Reactions and the $K^{-}$ properties in nuclear matter
• First observation of in-medium effects on phase space distributions of antikaons measured in proton-nucleus collisions
• In-medium effects in strangeness production in heavy-ion collisions at (sub-)threshold energies
• Kaon pair production close to threshold
• $K^{-}/K^{+}$ ratios in relativistic heavy-ion collisions
• Strangeness equilibration in heavy ion collisions
• Photoproduction of mesons in nuclei at GeV energies
• K${}^{-}$ Meson Production in the Proton-Proton Reaction at 3.67 GeV/c
• Kaon production and propagation at intermediate relativistic energies
• The production of K+K- pairs in proton-proton collisions below the phi meson threshold
• Seeing phi meson through the dilepton spectra in heavy-ion collisions
• Antikaon Production and Medium Effects in Heavy Ion Collisions at AGS
• Parametrization of cross sections for elementary hadronic collisions involving strange particles
• Near-threshold production of a0(980) mesons in the reaction pp -> d K^+ \bar{K}^0
• KKbar photoproduction from protons
• Near-threshold production of $a_0(980)$-mesons in $\pi N$ and NN collisions and $a_0/f_0$-mixing
• Strange Mesons as a Probe for Dense Nuclear Matter
• Experimental results on strangeness production in proton-proton collisions at COSY
• Production of $a_0$-mesons in pp and pn reactions
• Subthreshold and near-threshold kaon and antikaon production in proton-nucleus reactions
• Associated strangeness production at threshold
• General thoughts to the Kaon pair production in the threshold region
• Hyperon dynamics and production of multi-strangeness hypernuclei in heavy-ion collisions at 3A GeV
• Strangeness Production in Proton-Proton Collisions Close to Threshold
• Strangeness production and flow in heavy-ion collisions