0 v 1 1 5 Fe b 20 06 Kaon pair production close to threshold

l - th / 0 00 80 30 v 2 1 2 Fe b 20 01 Anti - Kaon Induced Reactions on the Nucleon ∗

Using a previously established effective Lagrangian model we describe anti-kaon induced reactions on the nucleon. The dominantly contributing channels in the cm-energy region from threshold up to 1.72 GeV are included (KN , πΣ, πΛ). We solve the Bethe-Salpeter equation in an unitary K-matrix approximation .

/ 04 02 03 0 v 1 2 0 Fe b 20 04 KLOE Results on Rare K 0 Decays

This paper describes the neutral Kaon dataset and physics measurements of KLOE at DAΦNE. A brief discussion on the prospects for detector upgrades and analysis of other K S rare decays is also included.

06 25 5 v 1 6 J un 1 99 6 KK̄ THRESHOLD PHENOMENA , f 0 − a 0 INTERFERENCE AND KAONIUM PRODUCTION

ar X iv : n uc l - ex / 0 20 20 21 v 1 2 6 Fe b 20 02 Evidence of kaon nuclear and Coulomb potential effects on soft K + production from nuclei

The ratio of forward K+ production on copper, silver and gold targets to that on carbon has been measured at proton beam energies between 1.5 and 2.3 GeV as a function of the kaon momentum pK using the ANKE spectrometer at COSYJülich. The strong suppression in the ratios observed for pK < 200–250 MeV/c can be ascribed to a combination of Coulomb and nuclear repulsion in the K+A system. This ope...

0 N ov 1 99 5 Do we have three S 11 resonances in the second resonance region ?

We review the status of the S11 N ∗ resonances in light of some recent theoretical and phenomenological results. Whereas the quark model predicts two such resonances around 1.6 GeV, there is considerable evidence for a third S11 resonance in this energy range. This suggests that a KΣ or KΛ quasi-bound state may indeed exist below the kaon production threshold. We show that kaon production exper...