Comparison of Phase Space Slicing and Dipole Subtraction Methods for gamma^* -> Q Qbar

Details Comparison of Phase Space Slicing and Dipole Subtraction Methods for gamma^* -> Q Qbar Comparison of Phase Space Slicing and Dipole Subtraction Methods for gamma^* -> Q Qbar

2001-09-26

arxiv.org/abs/hep-ph/0109246v2

Eur.Phys.J.C23:259-266,2002

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, 7 figures, 2 tables, additional references and comments added

Scientific paper

10.1007/s100520100868

We compare the phase space slicing and dipole subtraction methods in the computation of the inclusive and differential next-to-leading order cross sections for heavy quark production in the simple process gamma^* -> Q Qbar. For the phase space slicing method we study the effects of improvement terms that remove restrictions on the slicing parameter s_min. For the dipole method our comparison is a first check on some of its counterterms involving massive quarks, derived recently. In our comparison we address issues such as numerical accuracy and efficiency.

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