2 research outputs found
Charm Hadroproduction in -Factorization Approach
We compare the theoretical status and the numerical predictions of two
approaches for heavy quark production in the high energy hadron collisions,
namely the conventional LO parton model with collinear approximation and
-factorization approach. The main assumptions used in the calculations are
discussed. To extract the differences coming from the matrix elements we use
very simple gluon structure function and fixed coupling. It is shown that the
-factorization approach calculated formally in LO and with Sudakov form
factor accounts for many contributions related usually to NLO (and even NNLO)
processes of the conventional parton modelComment: 17 pages, 8 figure
Comparison of -Factorization Approach and QCD Parton Model for Charm and Beauty Hadroproduction
We compare the numerical predictions for heavy quark production in high
energy hadron collisions of the conventional QCD parton model and the
-factorization approach (semihard theory). The total production cross
sections, one-particle rapidity and distributions as well as two-particle
correlations are considered. The difference in the predictions of the two
approaches is not very large, while the shapes of the distributions are
slightly different.Comment: 16 pages, LaTeX, + 16 PostScript figure