The DIS(chi) Scheme for Heavy Quark Production at Small x

Details The DIS(chi) Scheme for Heavy Quark Production at Small x The DIS(chi) Scheme for Heavy Quark Production at Small x

2006-05-29

arxiv.org/abs/hep-ph/0605321v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 2 figures. To appear in the proceedings of DIS 2006, Tsukuba, Japan, April 2006

Scientific paper

In order to successfully describe DIS data, one must take heavy quark mass effects into account. This is often achieved using so called variable flavour number schemes, in which a parton distribution for the heavy quark species is defined above a suitable matching scale. At small x, one must also potentially include high energy corrections to this framework arising from the BFKL equation. We outline the definition of a variable flavour scheme which allows such corrections to be consistently implemented alongside a fixed order QCD expansion. Results of a global fit using this scheme are presented. We also discuss an extension of the resummation to NLL order.

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