Longitudinal polarization of hyperons in the forward region in polarized pp collisions

Journal Article · Mon Mar 01 04:00:00 EST 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.81.057501· OSTI ID:21409903

Wei, Zhou; Shanshan, Zhou; Qinghua, Xu ^[1]

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1. School of Physics, Shandong University, Jinan, Shandong 250100 (China)

We study the longitudinal polarization of hyperons and antihyperons at forward pseudorapidity, 2.5<{eta}<4, in singly polarized pp collisions at Relativistic Heavy Ion Collider energies by using different parametrizations of the polarized parton densities and different models for the polarized fragmentation functions. The results show that the {Sigma}{sup +} polarization is able to distinguish different pictures on spin transfer in high energy fragmentation processes; and the polarization of {Lambda} and {Lambda} hyperons can provide sensitivity to the helicity distribution of strange sea quarks. The influence from beam remnant to hyperon polarization in the forward region is also discussed.

• OSTI ID: 21409903
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 5 Vol. 81; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATORS
ANGULAR MOMENTUM
ANTIBARYONS
ANTIHYPERONS
ANTIMATTER
ANTIPARTICLES
BARYON-BARYON INTERACTIONS
BARYONS
BEAMS
BROOKHAVEN RHIC
DENSITY
DISTRIBUTION
ELEMENTARY PARTICLES
FERMIONS
HADRON-HADRON INTERACTIONS
HADRONS
HEAVY ION ACCELERATORS
HELICITY
HYPERONS
INTERACTIONS
MATTER
NUCLEON-NUCLEON INTERACTIONS
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
PARTICLE RAPIDITY
PHYSICAL PROPERTIES
POLARIZATION
PROTON-NUCLEON INTERACTIONS
PROTON-PROTON INTERACTIONS
QUARKS
SENSITIVITY
SIGMA BARYONS
SIGMA PARTICLES
SIGMA PLUS PARTICLES
SPIN
STORAGE RINGS
STRANGE PARTICLES