Polarization Effects in Lambda and Anti-Lambda Production at HERMES

Journal Article · Tue Aug 04 00:00:00 EDT 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3215733· OSTI ID:21344419

Belostotski, S L ^[1]

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1. Petersburg Nuclear Physics institute, PNPI 188300 Gatchina, Lenigrad district (Russian Federation)

Study of the LAMBDA and LAMBDA hyperon production in the HERMES experiment is discussed. The data were collected using a 27.6 GeV longitudinally polarized positron (or electron) beam of the HERA accelerator and a polarized or unpolarized target. The transverse polarizations (perpendicular to the production plane) of the LAMBDA and LAMBDA hyperons have been measured. The spin transfer K{sub LL} from the longitudinally polarized target has been found for inclusively detected LAMBDA and LAMBDA events. Longitudinal spin transfer D{sub LL} from the beam to the LAMBDA hyperon in the deep inelastic scattering regime has been analyzed. The D{sub LL} for LAMBDA has been measured for the first time.

• OSTI ID: 21344419
• Journal Information: AIP Conference Proceedings, Vol. 1149, Issue 1; Conference: SPIN 2008: 18. International Spin Physics Symposium, Charlottesville, VA (United States), 6-11 Oct 2008; Other Information: DOI: 10.1063/1.3215733; (c) 2009 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
DEEP INELASTIC SCATTERING
ELECTRON BEAMS
GEV RANGE
HERA STORAGE RING
LAMBDA BARYONS
LEPTON-NUCLEON INTERACTIONS
MULTIPARTICLE SPECTROMETERS
PARTICLE IDENTIFICATION
PARTICLE PRODUCTION
POLARIZATION
POLARIZED BEAMS
POLARIZED TARGETS
POSITRON BEAMS
SPIN
ANGULAR MOMENTUM
BARYONS
BEAMS
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
HADRONS
HYPERONS
INELASTIC SCATTERING
INTERACTIONS
LEPTON BEAMS
LEPTON-BARYON INTERACTIONS
LEPTON-HADRON INTERACTIONS
MEASURING INSTRUMENTS
PARTICLE BEAMS
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
SCATTERING
SPECTROMETERS
STORAGE RINGS
STRANGE PARTICLES
TARGETS