Recent Developments in Perturbative QCD: Q^2 Evolution of Chiral-Odd Distributions h_1(x,Q^2) and h_L(x,Q^2)

Details Recent Developments in Perturbative QCD: Q^2 Evolution of Chiral-Odd Distributions h_1(x,Q^2) and h_L(x,Q^2) Recent Developments in Perturbative QCD: Q^2 Evolution of Chiral-Odd Distributions h_1(x,Q^2) and h_L(x,Q^2)

1998-01-07

arxiv.org/abs/hep-ph/9801231v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

17 pages in Latex. figures are included as eps files. Invited talk presented at ``QCD Corrections and the New Physics'', Octob

Scientific paper

After reviewing QCD definitions of the chiral-odd spin-dependent parton distributions $h_1(x,Q^2)$ and h_L(x,Q^2), I will summarize the main feature of the recent two results in perturbative QCD: (i) Next-to-leading order $Q^2$ evolution of h_1(x,Q^2). (ii) Leading order Q^2 evolution of the twist-3 distribution h_L(x,Q^2) and the universal simplification of the Q^2 evolution of all the twist-3 distributions in the large N_c limit.

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