Is there an eta-3He quasi--bound state ?

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dc.creatorWilkin, C.
dc.creatorBuescher, M.
dc.creatorChiladze, D.
dc.creatorDymov, S.
dc.creatorHanhart, C.
dc.creatorHartmann, M.
dc.creatorHejny, V.
dc.creatorKacharava, A.
dc.creatorKeshelashvili, I.
dc.creatorKhoukaz, A.
dc.creatorMaeda, Y.
dc.creatorMersmann, T.
dc.creatorMielke, M.
dc.creatorMikirtychiants, S.
dc.creatorPapenbrock, M.
dc.creatorRathmann, F.
dc.creatorRausmann, T.
dc.creatorSchleichert, R.
dc.creatorStroeher, H.
dc.creatorTaeschner, A.
dc.creatorValdau, Yu.
dc.creatorWronska, A.
dc.date2007-07-10
dc.date.accessioned2026-07-07T11:52:45Z
dc.date.available2026-07-07T11:52:45Z
dc.descriptionThe observed variation of the total cross section for the dp -> 3He eta reaction near threshold means that the magnitude of the s--wave amplitude falls very rapidly with the eta centre--of--mass momentum. It is shown here that recent measurements of the momentum dependence of the angular distribution imply a strong variation also in the phase of this amplitude. Such a behaviour is that expected from a quasi--bound or virtual eta-3He state. The interpretation can be investigated further through measurements of the deuteron or proton analysing powers and/or spin--correlations.
dc.description10 pages with two eps figures
dc.identifierhttps://arxiv.org/abs/0707.1489
dc.identifierhttp://arxiv.org/abs/0707.1489
dc.identifierPhys.Lett.B654:92-96,2007
dc.identifierdoi:10.1016/j.physletb.2007.08.041
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/204296
dc.subjectNuclear Experiment
dc.subjectNuclear Theory
dc.titleIs there an eta-3He quasi--bound state ?
dc.typetext

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