The energy dependence of the total cross section for the pp->pK+Lambda reaction was measured in the threshold region covering the excess energy range up to 7 MeV. Existing model calculations describe the slope of the measured cross sections well, but are too low by a factor of two to three in rate. The data were used for a precise determination of the beam momentum of the COSY-synchrotron.
Preprint: FZJ-IKP(I)-1997-1 in
PostScript format (265kB)
E-print:
http://xxx.lanl.gov/abs/nucl-ex/9803003
Publication:
Phys.Lett. B
420
(1998)
211-216