Comparison of phase space slicing and dipole subtraction methods for γ* → QQ
NIKHEF Theory Group, Kruislaan 409, 1098 SJ Amsterdam, The Netherlands
2 Dipartimento di Fisica, Università di Parma, INFN Gruppo Collegato di Parma, 43100 Parma, Italy
Published online: 25 January 2002
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 γ* → QQ. For the phase space slicing method we study the effects of improvement terms that remove restrictions on the slicing parameter smin. 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.
© Società Italiana di Fisica, Springer-Verlag, 2002