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Unitarity and nonperturbative effects in the spin structure functions at small $x$

S. M. Troshin·N. E. Tyurin
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Abstract

We consider low-$x$ behavior of the spin structure functions $g_1(x)$ and $h_1(x)$ in the unitarized chiral quark model that combines the ideas on constituent quark structure of hadrons with a geometrical scattering picture and unitarity. A nondiffractive singular low-$x$ dependence of $g^p_1(x)$ and $g_1^n(x)$ is obtained and a diffractive type smooth behavior of $h_1(x)$ is predicted at small $x$.

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S. M. Troshin, N. E. Tyurin. 1999-05-31. Unitarity and nonperturbative effects in the spin structure functions at small $x$. https://arxiv.org/abs/hep-ph/9905564

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