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

Journal Article · Mon Mar 01 00:00:00 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, Vol. 81, Issue 5; Other Information: DOI: 10.1103/PhysRevD.81.057501; (c) 2010 The American Physical Society; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

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