Kaon Pair Production in Proton--Proton Collisions

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dc.creatorMaeda, Y.
dc.creatorHartmann, M.
dc.creatorKeshelashvili, I.
dc.creatorBarsov, S.
dc.creatorBüscher, M.
dc.creatorDrochner, M.
dc.creatorDzyuba, A.
dc.creatorHejny, V.
dc.creatorKacharava, A.
dc.creatorKleber, V.
dc.creatorKoch, H. R.
dc.creatorKoptev, V.
dc.creatorKulessa, P.
dc.creatorLorentz, B.
dc.creatorMersmann, T.
dc.creatorMikirtytchiants, S.
dc.creatorMussgiller, A.
dc.creatorNekipelov, M.
dc.creatorOhm, H.
dc.creatorPrasuhn, D.
dc.creatorSchleichert, R.
dc.creatorStein, H. J.
dc.creatorStröher, H.
dc.creatorValdau, Yu.
dc.creatorWilkin, C.
dc.creatorWüstner, P.
dc.date2007-10-09
dc.date.accessioned2026-07-07T11:37:56Z
dc.date.available2026-07-07T11:37:56Z
dc.descriptionThe differential and total cross sections for kaon pair production in the pp->ppK+K- reaction have been measured at three beam energies of 2.65, 2.70, and 2.83 GeV using the ANKE magnetic spectrometer at the COSY-Juelich accelerator. These near-threshold data are separated into pairs arising from the decay of the phi-meson and the remainder. For the non-phi selection, the ratio of the differential cross sections in terms of the K-p and K+p invariant masses is strongly peaked towards low masses. This effect can be described quantitatively by using a simple ansatz for the K-p final state interaction, where it is seen that the data are sensitive to the magnitude of an effective K-p scattering length. When allowance is made for a small number of phi events where the K- rescatters from the proton, the phi region is equally well described at all three energies. A very similar phenomenon is discovered in the ratio of the cross sections as functions of the K-pp and K+pp invariant masses and the identical final state interaction model is also very successful here. The world data on the energy dependence of the non-phi total cross section is also reproduced, except possibly for the results closest to threshold.
dc.description12 two-column pages, 12 figures, 1 table
dc.identifierhttps://arxiv.org/abs/0710.1755
dc.identifierhttp://arxiv.org/abs/0710.1755
dc.identifierPhys.Rev.C77:015204,2008
dc.identifierdoi:10.1103/PhysRevC.77.015204
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/199386
dc.subjectNuclear Experiment
dc.titleKaon Pair Production in Proton--Proton Collisions
dc.typetext

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