Anti-Lambda polarization in high energy pp collisions with polarized beams

Journal Article · Sat Apr 01 04:00:00 EST 2006 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.73.077503· OSTI ID:20782855

Qinghua, Xu; Zuotang, Liang ^[1]; Sichtermann, Ernst ^[2]

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1. Department of Physics, Shandong University, Jinan, Shandong 250100 (China)
2. Nuclear Science Division, MS 70R0319, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)

We study the polarization of the anti-Lambda particle in polarized high energy pp collisions at large transverse momenta. The anti-Lambda polarization is found to be sensitive to the polarization of the antistrange sea of the nucleon. We make predictions using different parametrizations of the polarized quark distribution functions. The results show that the measurement of longitudinal anti-Lambda polarization can distinguish different parametrizations, and that similar measurements in the transversely polarized case can give some insights into the transversity distribution of the antistrange sea of nucleon.

• OSTI ID: 20782855
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 7 Vol. 73; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
DISTRIBUTION
DISTRIBUTION FUNCTIONS
LAMBDA PARTICLES
NUCLEONS
PARTICLE STRUCTURE
POLARIZATION
POLARIZED BEAMS
PROTON-PROTON INTERACTIONS
QUARKS
TRANSVERSE MOMENTUM