QCD factorization with heavy quarks

Abstract

We further analyze the definition and the calculation of the heavy quark impact factor at next-to-leading (NL) $\log s$ level, and we provide its analytical expression in a previously proposed k-factorization scheme. Our results indicate that k-factorization holds at NL level with a properly chosen energy scale, and with the same gluonic Green's function previously found in the massless probe case.

Comments: LaTeX2e, 4pp, 2 figures, uses espcrc2.sty. Talk given at International Workshop on Diffraction in High-Energy Physics (Diffraction 2000), Cetraro, Italy, Sept. 2-7, 2000. The complete paper is also available at http://www-ttp.physik.uni-karlsruhe.de/Preprints/