Transverse spin effects of sea quarks in unpolarized nucleons

Details Transverse spin effects of sea quarks in unpolarized nucleons Transverse spin effects of sea quarks in unpolarized nucleons

2007-01-30

arxiv.org/abs/hep-ph/0701255v1

Phys.Rev.D75:014026,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, 5 figures, to appear in Physical Review D

Scientific paper

10.1103/PhysRevD.75.014026

We calculate the non-zero 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 $\cos 2 \phi$ asymmetries in the unpolarized $pp$ and $p D$ Drell-Yan processes at FNAL E866/NuSea experiments. The prediction for the $\cos 2 \phi$ asymmetries in the unpolarized $pp$ Drell-Yan process at the BNL Relativistic Heavy Ion Collider (RHIC) is also given.

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