Since recently the Monte Carlo generator program MC@NLO
exists [130,131,132].
It provides a calculation of DGLAP evolution equations
with NLO Matrix Elements which is matched with the generation of
parton showers to describe higher orders which are not contained
in the NLO calculations.
It has been shown (see fig.7)
to successfully describe the
beauty production measurements in collisions
with data collected in Run-II at the Tevatron [133]
but is yet to be adapted for the processes in
collisions
at HERA.
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