Speaker
Mr
Vadim Alexakhin
(JINR Dubna)
Description
Lambda and Lambda-bar hyperons were produced at the COMPASS experiment at CERN, using Deep-Inelastic Scattering (DIS) of 160 GeV/c polarized muons on a longitudinally polarized target.
The study of Lambda and Lambda-bar hyperons in DIS is
important for the understanding of the nucleon structure, the mechanisms of
hyperon production and the hyperon spin structure. In particular, it may provide valuable information on the unpolarized strange quark distributions
s(x) and s-bar(x) in the nucleon.
The data sample contains about 70 000 Lambda and 42 000 Lambda-bar. Large and comparable
statistics on both Lambda and Lambda-bar hyperons is a distinct feature of the COMPASS
experiment. Preliminary results on the multiplicities of Lambda and Lambda-bar
production, polarization of Lambda and Lambda-bar and yields of heavy hyperons in DIS
are presented.
Primary author
Mr
Vadim Alexakhin
(JINR Dubna)
