STRANGENESS PRODUCTION IN THE REACTION PP-]K-P IN THE THRESHOLD REGION(LAMBDA)

Authors
BILGER R BOHM A BRAND H BRAND S BRINKMANN KT CLEMENT H DELLERT M DENNERT H EYRICH W FILGES D FREIESLEBEN H FRITSCH M GEYER R HASSAN A HAUFFE J HERRMANN P HUBNER B JAHN P KILIAN K KIRSCH M KOCH H KRESS J KRUG J KUHLMANN E LANGE JS METZGER A MICHEL P MOLLER K MOOSBURGER M MORSCH HP NAKE C NANN H NAUMANN B NAUMANN L RINGE P RODERBURG E ROGGE M SCHAMLOTT A SCHONMEIER P SCHULKE A SPERL R STEINKE M STINZING F TUREK P WAGNER GJ WIRTH S ZIELINSKI U
Citation
R. Bilger et al., STRANGENESS PRODUCTION IN THE REACTION PP-]K-P IN THE THRESHOLD REGION(LAMBDA), Physics letters. Section B, 420(1-2), 1998, pp. 217-224
Citations number
27
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
420
Issue
1-2
Year of publication
1998
Pages
217 - 224
Database
ISI
SICI code
0370-2693(1998)420:1-2<217:SPITRP>2.0.ZU;2-X
Abstract
The reaction pp --> K+ Lambda p was measured exclusively at the cooler synchrotron COSY at beam momenta of p(Beam) = 2.50 GeV/c and p(Beam) = 2.75 GeV/c using the TOF detector. Angular and momentum distribution s were obtained for the full phase space of the reaction products. Tot al cross sections were extracted to be (2.7 +/- 0.3) mu b and (12.0 +/ - 0.4) mu b, respectively. The polarization of the Lambda-hyperon was determined as a function of its transversal momentum and was found to be negative for transverse momentum transfers of p(T) greater than or equal to 0.3 GeV/c. The results together with existing data are compar ed with phenomenological parametrizations and model calculations on th e basis of meson exchange. (C) 1998 Elsevier Science B.V.