$k_{\perp}$-Factorization and Perturbative Invariants at Small $x$

Details $k_{\perp}$-Factorization and Perturbative Invariants at Small $x$ $k_{\perp}$-Factorization and Perturbative Invariants at Small $x$

1996-08-13

arxiv.org/abs/hep-ph/9608310v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, LateX

Scientific paper

I review the basic idea of $k_{\perp}$-factorization and its relation to collinear factorization. Theoretical results in resummed perturbation theory are summarized and the example of the heavy-flavour structure functions is explicitly considered. Using these results one can investigate the small-$x$ behaviour of quantities that are independent of the non-perturbative parton densities. In particular, one can introduce physical anomalous dimensions that relate the scaling violations in different hadronic observables.

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