Comparison of the Near-Threshold Production of eta- and K-Mesons in Proton-Proton Collisions

Abstract

The pp -> pp eta and pp -> pLambda K^+ reactions near threshold are dominated by the first and second S_11 resonance respectively. It is shown that a one-pion-exchange model exciting these isobars reproduces well the ratio of the production cross sections. The consequences for this and other channels are discussed.

10 pages, LaTeX2e, 1 eps-figure

Cited by in corpus (33)

• Resonance model study of kaon production in baryon baryon reactions for heavy ion collisions
• Close-to-threshold Meson Production in Hadronic Interactions
• Total Cross Section of the Reaction pp \to pK^+ΛClose to Threshold
• Comparison of Lambda and Sigma(0) Threshold Production in Proton-Proton Collisions
• Energy Dependence of the Near-Threshold Total Cross-Section for the pp --> pp eta' Reaction
• $pp\to p{K}^{+}\Lambda$ reaction in an effective Lagrangian model
• Gluons and the eta' nucleon coupling constant
• Production of $\eta \prime$ Mesons in the $pp\to pp\eta \prime$ Reaction at 3.67 GeV/c
• Energy dependence of the Lambda/Sigma0 production cross section ratio in proton proton interactions
• The reactions $pp\to p\Lambda K^{+}$ and $pp\to p{\Sigma }^0{K}^{+}$ near their thresholds
• Production of Lambda and Sigma^0 hyperons in proton-proton collisions
• Influence of N*-resonances on hyperon production in the channel pp->K+ Lambda p at 2.95, 3.20 and 3.30 GeV/c beam momentum
• Threshold hyperon production in proton-proton collisions at COSY-11
• Production of $\omega$ and $\varphi$ Mesons in Near-Threshold $\pi N$ Reactions: Baryon Resonances and Validity of the OZI Rule
• Inclusive K^+ meson production in proton-nucleus interactions
• Has a "$pp{K}^{-}$" Signal in p+p Reactions been Observed Yet?
• Role of N*(1650) in the near threshold pp --> p Lambda K+ and pp --> p Sigma0 K+ reactions
• A clue to the mechanism of $\Lambda K^{+}$ production in $pp$-reactions
• Analysis of the Lambda p Final State Interaction in the Reaction p+p->K^+(Lambda p)
• Phenomenology of the Lambda/Sigma^0 production ratio in pp collisions
• A relativistic two-nucleon model for $A(p,K^{+}){}_{\Lambda }B$ reaction
• Hyperon production in near threshold nucleon-nucleon collisions
• Examination of experimental conditions for the production of proton-rich and neutron-rich hypernuclei
• Inclusive Λ production in proton-proton collisions at 3.5 GeV
• Strangeness Production Process $pp\to n{K}^{+}{\Sigma }^{+}$ within Resonance Model
• Axial U(1) dynamics in eta and eta' photoproduction
• Medium effects in $\Lambda K^{+}$ pair production by 2.83 GeV protons on nuclei
• The extraction of parameters from final state interactions
• Spin and Isospin Effects in the NN -> NK Lambda Reaction Near Threshold
• On $pp\to pK\Lambda ,NK\Sigma ,pp\varphi$ -- the basic ingredients for strangeness production in heavy ion collisions
• Strangeness Production in pp and pn Reactions at COSY
• Strangeness production in proton-proton and proton-nucleus collisions
• Associated Strangeness Production in the Threshold Region