Published December 2007
| Version v1
Journal article
(Λ-bar)-hyperon global polarization in Au + Au collisions at RHIC
Description
We present the (Λ-bar)-hyperon global polarization in Au + Au collisions at √sNN=62 GeV and 200 GeV measured with the STAR detector at RHIC. The observed (Λ-bar)-hyperon global polarization is consistent with zero, what is in agreement with recent measurements of Λ global polarization, as well as φ(1020) and K*0(892) vector mesons spin alignment with respect to the reaction plane. The possible dependence of the global polarization on relative azimuthal angle between the orbital momentum of the system and the hyperon 3-momentum is discussed. The corresponding systematic uncertainty due to detector acceptance is found to be less than 20%. (authors)
Additional details
Publishing Information
- Journal Title
- High Energy Physics and Nuclear Physics
- Journal Volume
- 31
- Journal Issue
- 12
- Journal Page Range
- p. 1185-1188
- ISSN
- 0254-3052
INIS
- Country of Publication
- China
- Country of Input or Organization
- China
- INIS RN
- 41073407
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Descriptors DEI
- ACCURACY; ALIGNMENT; ANTILAMBDA PARTICLES; BROOKHAVEN RHIC; GEV RANGE 100-1000; GEV RANGE 10-100; GOLD; HEAVY ION REACTIONS; K*-892 MESONS; ORBITAL ANGULAR MOMENTUM; PARTICLE PRODUCTION; PHI-1020 MESONS; POLARIZATION; SPIN ORIENTATION
- Descriptors DEC
- ACCELERATORS; ANGULAR MOMENTUM; ANTIBARYONS; ANTIHYPERONS; ANTIMATTER; ANTIPARTICLES; BARYONS; BOSONS; ELEMENTARY PARTICLES; ELEMENTS; ENERGY RANGE; FERMIONS; GEV RANGE; HADRONS; HEAVY ION ACCELERATORS; HYPERONS; LAMBDA BARYONS; LAMBDA PARTICLES; MATTER; MESONS; METALS; NUCLEAR REACTIONS; ORIENTATION; PHI MESONS; STORAGE RINGS; STRANGE MESONS; STRANGE PARTICLES; TRANSITION ELEMENTS; VECTOR MESONS
Optional Information
- Notes
- 3 figs., 13 refs.