Hyperon polarisation in the reaction (p)over-bar12C -> (Lambda)over-bar Lambda X

Authors
Citation
S. Pomp, Hyperon polarisation in the reaction (p)over-bar12C -> (Lambda)over-bar Lambda X, NUCL PHYS A, 663, 2000, pp. 489C-492C
Citations number
6
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
NUCLEAR PHYSICS A
ISSN journal
0375-9474 → ACNP
Volume
663
Year of publication
2000
Pages
489C - 492C
Database
ISI
SICI code
0375-9474(20000131)663:<489C:HPITR(>2.0.ZU;2-5
Abstract
Data from the (p) over bar(12)C --> <(Lambda)over bar>Lambda X reaction, co llected by the PS185 experiment at antiproton momenta around 1.44 GeV/c, 1. 66 GeV/c and 1.77 GeV/c, have been analyzed and the Lambda and <(Lambda)ove r bar> polarisations have been extracted. The events are classified as quasi-free or non-quasi-free and it is found t hat the polarisations for Lambda and <(Lambda)over bar> differ in the latte r case. Such an effect comes from differences in the interaction of the out going Lambda and <(Lambda)over bar> with the residual nucleus and the measu rement constitutes the first information on <(Lambda)over bar> interaction with nuclear matter.