Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Bag Model Prediction for the Nucleon's Chiral-odd Twist-3 Distribution
  h_L(x,Q^2) at High Q^2   We study the Q^2 evolution of the nucleon's chiral-odd twist-3 distribution
h_L(x,Q^2) starting from the MIT bag model calculation. A simple GLAP equation
for h_L(x,Q^2) obtained at large N_c is used for the Q^2 evolution. The
correction due to the finite value of N_c is O(1/N_c^2)\sim 10% level. It turns
out that the twist-3 contribution to h_L(x,Q^2) is significantly reduced at
Q^2=10 GeV^2 in contrast to the g_2(x,Q^2) case. This is due to the fact that
the corresponding anomalous dimension for h_L is larger than that for g_2 at
small n (spin).

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The categories of this paper are: hep-lat
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The categories of this paper are: nlin
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The categories of this paper are: stat
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The categories of this paper are: chem-ph
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The categories of this paper are: supr-con
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The categories of this paper are: atom-ph
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The categories of this paper are: cs
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The categories of this paper are: plasm-ph
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The categories of this paper are: eess
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The categories of this paper are: mtrl-th
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The categories of this paper are: bayes-an
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The categories of this paper are: math
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The categories of this paper are: alg-geom
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The categories of this paper are: patt-sol
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The categories of this paper are: nucl-th
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The categories of this paper are: math-ph