Published July 30, 2003 | Version v1
Journal article Metadata-only

Transverse Polarisation of Λ and Λ-bar Hyperons in Quasi-Real Photon Nucleon Scattering

Creators

  • 1. Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139 (United States)

Description

The transverse polarisation in inclusively produced Λ and Λ-bar hyperons has been studied at HERMES using the 27.5 GeV positron beam of the HERA accelerator at DESY. The average transverse polarisations were found to be PnΛ = 0.055 ± 0.006 (stat) ± 0.016 (syst) and PnΛ-bar) = -0.043 ± 0.013 (stat) ± 0.012 (syst) for Λ and Λ-bar, respectively. The dependence of PnΛ and PnΛ-bar on the transverse momentum pT and on the hyperons' light-cone momentum fraction ζ has been investigated. The measured polarisations for Λ and Λ-bar exhibit different behavior in the current and target fragmentation regions

Additional details

Identifiers

DOI
10.1063/1.1607195;

Publishing Information

Journal Title
AIP Conference Proceedings
Journal Volume
675
Journal Issue
1
Journal Page Range
p. 548-552
ISSN
0094-243X
CODEN
APCPCS

Conference

Title
15. international spin physics symposium and workshop on polarized electron sources and polarimeters
Acronym
SPIN 2002
Dates
9-14 Sep 2002
Place
Upton, NY (United States)

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
36068597
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Resource subtype / Literary indicator
Conference
Descriptors DEI
ANTILAMBDA PARTICLES; DEEP INELASTIC SCATTERING; DESY; GEV RANGE; HERA STORAGE RING; LEPTON-PROTON INTERACTIONS; LIGHT CONE; PHOTON-NUCLEON INTERACTIONS; PHOTOPRODUCTION; POLARIZATION; POSITRON BEAMS; SPIN; STRUCTURE FUNCTIONS; TRANSVERSE MOMENTUM
Descriptors DEC
ACCELERATORS; ANGULAR MOMENTUM; ANTIBARYONS; ANTIHYPERONS; ANTIMATTER; ANTIPARTICLES; BARYONS; BASIC INTERACTIONS; BEAMS; CYCLIC ACCELERATORS; ELECTROMAGNETIC INTERACTIONS; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; FUNCTIONS; HADRONS; HYPERONS; INELASTIC SCATTERING; INTERACTIONS; LAMBDA BARYONS; LAMBDA PARTICLES; LEPTON BEAMS; LEPTON-BARYON INTERACTIONS; LEPTON-HADRON INTERACTIONS; LEPTON-NUCLEON INTERACTIONS; LINEAR MOMENTUM; MATTER; PARTICLE BEAMS; PARTICLE INTERACTIONS; PARTICLE PRODUCTION; PARTICLE PROPERTIES; PHOTON-BARYON INTERACTIONS; PHOTON-HADRON INTERACTIONS; SCATTERING; SPACE-TIME; STORAGE RINGS; STRANGE PARTICLES; SYNCHROTRONS

Optional Information

Notes
(c) 2003 American Institute of Physics
Collaborations
HERMES Collaboration