Small x behaviour of the chirally-odd parton distribution h₁(x,Q²)

1996/06/07 by R. Kirschner, L. Mankiewicz, A. Schäfer +1
Physics and Astronomy · #hep-ph

paper · pdf

published as Z.Phys. C74 (1997) 501-508 · 16 pages latex

arxiv created 1996/06/07 · arxiv updated 2009/11/30

Abstract

The small x behaviour of the structure function h₁(x,Q²) is studied within the leading logarithmic approximation of perturbative QCD. There are two contributions relevant at small x. The leading one behaves like ((1)/(x))⁰ i.e. it is just a constant in this limit. The second contribution, suppressed by one power of x, includes the terms summed by the GLAP equation. Thus for h₁(x,Q²) the GLAP asymptotics and Regge asymptotics are completely different, making h₁(x,Q²) quite an interesting quantity for the study of small x physics.

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