Spin dependent structure function $ g_{2}(x)$ in quark-parton model. Possible interpretation and numerical estimates

Details Spin dependent structure function $ g_{2}(x)$ in quark-parton model. Possible interpretation and numerical estimates Spin dependent structure function $ g_{2}(x)$ in quark-parton model. Possible interpretation and numerical estimates

1994-10-25

arxiv.org/abs/hep-ph/9410366v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

LATEX, 11 pages, 4 figures appended as uuencoded file, requires epsfig.sty

Scientific paper

It is shown that in the special infinite momentum frame where photon has pure transverse components at $P\rightarrow\infty$ the spin-dependent deep inelastic structure function $ g_{2}(x)$ has a reasonable interpretation in terms of quark-parton wave functions, whereas in the conventional frame where photon has pure z-component the parton model fails for $ g_{2}(x)$.The spin dependent structure functions $ g_{1}(x)$ and $ g_{2}(x)$ have been calculated in the relativistic quark model constructed in such frame. The results indicate significant twist-3 contribution.

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