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Experimental determination of the complete spin structure for (p)over-barp ->(Lambda)over-bar Lambda at p((p)over-bar)=1.637 GeV/c
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2006 (English)In: Physical Review C. Nuclear Physics, ISSN 0556-2813, E-ISSN 1089-490X, Vol. 74, no 1, 015206- p.Article in journal (Refereed) Published
Abstract [en]

The reaction (p) over barp -> (Lambda) over bar Lambda -> (p) over bar pi(+)p pi(-) has been measured with high statistics at a beam momentum of p((p) over bar)=1.637GeV/c. The use of a transversely polarized frozen-spin target combined with the self-analyzing property of Lambda/(Lambda) over bar decay allows access to unprecedented information on the spin structure of the interaction. The most general spin-scattering matrix can be written in terms of 11 real parameters for each bin of scattering angle; each of these parameters is determined with reasonable precision. From these results, all conceivable spin correlations are determined with inherent self-consistency. Good agreement is found with the few previously existing measurements of spin observables in (p) over barp ->(Lambda) over bar Lambda near this energy. Existing theoretical models do not give good predictions for those spin observables that had not been previously measured.

Place, publisher, year, edition, pages
2006. Vol. 74, no 1, 015206- p.
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Physical Sciences
URN: urn:nbn:se:uu:diva-155682DOI: 10.1103/PhysRevC.74.015206ISI: 000239511600047OAI: oai:DiVA.org:uu-155682DiVA: diva2:427588
Available from: 2011-06-28 Created: 2011-06-28 Last updated: 2013-02-18

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Pomp, Stephan
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