Transverse strange quark spin structure of the nucleon

Details Transverse strange quark spin structure of the nucleon Transverse strange quark spin structure of the nucleon

2011-07-25

arxiv.org/abs/1107.4952v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages. 16 figures. Submitted to Physical Review D

Scientific paper

We investigate the transverse quark spin densities of the nucleon with the lowest moment within the framework of the SU(3) chiral quark-soliton model, emphasizing the strange quark spin density. Based on previous results of the vector and tensor form factors, we are able to determine the impact-parameter dependent probability densities of transversely polarized quarks in an unpolarized nucleon as well as those of unpolarized quarks in a transversely polarized nucleon. We find that the present numerical results for the transverse spin densities of the up and down quarks are in good agreement with those of the lattice calculation. We predict the transvere spin densities of the strange quark. It turns out that the polarized strange quark is noticeably distorted in an unpolarized proton.

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