Scalar-isovector K K-bar production close to threshold

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dc.creatorDzyuba, A.
dc.creatorKleber, V.
dc.creatorBuescher, M.
dc.creatorChernyshev, V. P.
dc.creatorDymov, S.
dc.creatorFedorets, P.
dc.creatorGrishina, V.
dc.creatorHanhart, C.
dc.creatorHartmann, M.
dc.creatorHejny, V.
dc.creatorKondratyuk, L.
dc.creatorKoptev, V.
dc.creatorKulessa, P.
dc.creatorMaeda, Y.
dc.creatorMersmann, T.
dc.creatorMikirtychyants, S.
dc.creatorNekipelov, M.
dc.creatorPrasuhn, D.
dc.creatorSchleichert, R.
dc.creatorSibirtsev, A.
dc.creatorStein, H. J.
dc.creatorStroeher, H.
dc.creatorZychor, I.
dc.date2006-05-24
dc.date2006-08-21
dc.date.accessioned2026-07-07T11:28:17Z
dc.date.available2026-07-07T11:28:17Z
dc.descriptionThe reaction pp -> d K^+ K^0-bar has been investigated at excess energies Q = 47.4 and 104.7 MeV above the K^+ K^0-bar threshold at COSY-Juelich. Coincident dK^+ pairs were detected with the ANKE spectrometer, and events with a missing K^0-bar invariant-mass subsequently identified. The joint analysis of invariant-mass and angular distributions reveals s-wave dominance between the two kaons, in conjunction with a p-wave between the deuteron and the kaon pair, i.e. K K-bar production via the a_0^+(980) channel. Integration of the differential distributions yields total cross sections of sigma(pp -> d K^+ K^0-bar) = (38 +/- 2(stat) +/- 14(syst)) nb and 190 +/- 4(stat) +/- 39(syst)) nb for the low and high Q values, respectively.
dc.description7 pages, 6 figures; accepted for publication in Eur.Phys.J. A
dc.identifierhttps://arxiv.org/abs/nucl-ex/0605030
dc.identifierhttp://arxiv.org/abs/nucl-ex/0605030
dc.identifierEur.Phys.J.A29:245-251,2006
dc.identifierdoi:10.1140/epja/i2006-10087-7
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/196392
dc.subjectNuclear Experiment
dc.subjectHigh Energy Physics - Phenomenology
dc.titleScalar-isovector K K-bar production close to threshold
dc.typetext

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