The Partonic Content of $h_1(x)$ and $h_2(x)

Details The Partonic Content of $h_1(x)$ and $h_2(x) The Partonic Content of $h_1(x)$ and $h_2(x)

1994-07-03

arxiv.org/abs/hep-ph/9407213v1

Phys.Rev.D49:3187-3196,1994

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, AZPH-TH 93-32, Latex, Phys. Rev D 49, 3187 (1994)

Scientific paper

10.1103/PhysRevD.49.3187

A light-cone wavefunction interpretation is presented for the polarized distribution functions $h_1(x)$ and $h_2(x)$. All matrix elements for moments of these distributions are given in terms of overlap integrals between Fock state amplitudes of the target state. In a suitable spinor basis, $h_1(x)$ involves only diagonal matrix elements so can be interpreted as a density. Matrix elements of $h_2(x)$ connect Fock states differing by one gluon so that $h_2(x)$ has no simple interpretation as a density. Nevertheless, in the wavefunction decomposition, $h_2(x)$ is described through a compact set of elementary quark-gluon processes which are averaged over the target wavefunction.

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