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20 April 2024

» arxiv » nucl-ex/9906011

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Spin Transfer in Exclusive Lambda Production from pp Collisions at 3.67 GeV/c
DISTO Collaboration: F. Balestra ; Y. Bedfer ; R. Bertini ; L.C. Bland ; A. Brenschede ; F. Brochard ; M.P. Bussa ; V. Chalyshev ; Seonho Choi ; M. Debowski ; M. Dzemidzic ; J.-Cl. Faivre ; I.V. Falomkin ; L. Fava ; L. Ferrero ; J. Foryciarz ; V. Frolov ; R. Garfagnini ; D. Gill ; A. Grasso ; S. Heinz ; V.V. Ivanov ; W.W. Jacobs ; W. Kuehn ; A. Maggiora ; M. Maggiora ; A. Manara ; D. Panzieri ; H.-W. Pfaff ; G. Piragino ; G.B. Pontecorvo ; A. Popov ; J. Ritman ; P. Salabura ; F. Tosello ; S.E. Vigdor ; G. Zosi ;
Date:	23 Jun 1999
Journal:	Phys.Rev.Lett. 83 (1999) 1534-1537
Subject:	nucl-ex hep-ex
Abstract:	We report the first polarization transfer measurements for exclusive hyperon production reactions. The normal spin transfer coefficient DNN for pp -> p K+ Lambda is large and negative for forward Lambda production at a beam momentum of 3.67 GeV/c, a result qualitatively consistent with expectations for a mechanism dominated by kaon-exchange and rescattering. The sign of DNN is opposite to that observed in the fragmentation regime for inclusive Lambda production at much higher energies.
Source:	arXiv, nucl-ex/9906011
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