Associated strangeness production at threshold

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dc.creatorKowina, P.
dc.creatorWolke, M.
dc.creatorAdam, H. -H.
dc.creatorBudzanowski, A.
dc.creatorCzyzykiewicz, R.
dc.creatorGrzonka, D.
dc.creatorJanusz, M.
dc.creatorJarczyk, L.
dc.creatorKamys, B.
dc.creatorKhoukaz, A.
dc.creatorKilian, K.
dc.creatorLister, T.
dc.creatorMoskal, P.
dc.creatorOelert, W.
dc.creatorRozek, T.
dc.creatorSanto, R.
dc.creatorSchepers, G.
dc.creatorSefzick, T.
dc.creatorSiemaszko, M.
dc.creatorSmyrski, J.
dc.creatorSteltenkamp, S.
dc.creatorStrzalkowski, A.
dc.creatorWinter, P.
dc.creatorWustner, P.
dc.creatorZipper, W.
dc.date2003-02-13
dc.date.accessioned2026-07-07T12:54:25Z
dc.date.available2026-07-07T12:54:25Z
dc.descriptionThe associated strangeness dissociation at threshold has been studied at the COSY-11 facility measuring the hyperon - and the K+K- meson pair production. Measurements of the near threshold Lambda and Sigma0 production via the pp -> pK+ Lambda / Sigma0 reaction at COSY-11 have shown that the Lambda / Sigma0 cross section ratio exceeds the value at high excess energies (Q >= 300 MeV) by an order of magnitude. For a better understanding additional data have been taken between 13 MeV and 60 MeV excess energy. The near threshold production of the charged kaon-antikaon pair is related to the discussion about the nature of the scalar states in the 1 GeV/c^2 mass range, i.e. the f0(980) and a0(980). The interpretation as a K anti-K molecule is strongly dependent on the K anti-K interaction which can be studied via the production channel. A first total cross section value on the reaction pp -> ppK+K- at an excess energy of 17 MeV i.e. below the phi production threshold was measured.
dc.description3 pages, 2 figures, Presented at Conference on Quarks and Nuclear Physics (QNP 2002), Julich, Germany, 9-14 Jun 2002
dc.identifierhttps://arxiv.org/abs/nucl-ex/0302014
dc.identifierhttp://arxiv.org/abs/nucl-ex/0302014
dc.identifierEur.Phys.J.A18:351-354,2003
dc.identifierdoi:10.1140/epja/i2002-10234-2
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/223925
dc.subjectNuclear Experiment
dc.titleAssociated strangeness production at threshold
dc.typetext

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