Transverse spin effects of sea quarks in unpolarized nucleons

Journal Article · Mon Jan 01 04:00:00 EST 2007 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.75.014026· OSTI ID:20933240

Zhun, Lu; Schmidt, Ivan ^[1]; Boqiang, Ma ^[2]

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1. Departamento de Fisica, Universidad Tecnica Federico Santa Maria, Casilla 110-V, Valparaiso (Chile)
2. School of Physics and MOE Key Laboratory of Heavy Ion Physics, Peking University, Beijing 100871 (China)

We calculate the nonzero Boer-Mulders functions of sea quarks inside the proton in a meson-baryon fluctuation model. The results show that the transverse spin effects of sea quarks in an unpolarized nucleon are sizable. Using the obtained antiquark Boer-Mulders functions, we estimate the cos2{phi} asymmetries in the unpolarized pp and pD Drell-Yan processes at FNAL E866/NuSea experiments. The prediction for the cos2{phi} asymmetries in the unpolarized pp Drell-Yan process at the BNL Relativistic Heavy Ion Collider (RHIC) is also given.

• OSTI ID: 20933240
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 1 Vol. 75; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
BNL
BROOKHAVEN RHIC
DRELL MODEL
MESONS
PROTONS
QUARKS
SPIN